1 20 17 https://www.geosciencecollections.milne-library.org/files/original/d2fcaf97c629f8eaecc8524050a43343.JPG fcc5902a23beefbd795c6662798f4dfe Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-1 hand sample of red shale https://www.geosciencecollections.milne-library.org/files/original/3b3e56d9ca105e0b279039211b85bf03.png b4f98b0361b5d07e5d1a058caaa9a178 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-1 Title A name given to the resource Red shale Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Red shale from the Indian River member of the Normanskill formation. This rock contains hematite, chlorite, muscovite, plagioclase, and quartz. The thin section shows muscovite and biotite with some larger quartz grains visible and minor hematite staining. This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism). This rock was collected from the east end of a large road cut which samples 2 and 3 were also collected from. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/d2121e3b3193cb319b0f6ea9c8c30795.JPG e4c85f533d498eae5f5dd59d68374af1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-2 hand sample of green shale https://www.geosciencecollections.milne-library.org/files/original/6f8442b4cb235b05d63ec51d00c696f4.png 6d9d1d50a91bdc675c171165c085e2a8 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-2 Title A name given to the resource Green shale Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Green shale of the Indian River member of the Normanskill formation. This shale contains muscovite, chlorite, plagioclase, and quartz. The thin section shows quartz and biotite with some minor opaques. This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism). This rock was collected from the east end of a large road cut where samples 1 and 3 were also collected from. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/aee85236df681415674deb65ab979c40.JPG 79673125cb0e175dbf35ff07c003efe0 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-3 hand sample of graywacke https://www.geosciencecollections.milne-library.org/files/original/9de10e31bd8eda9dc98bcf63562f272e.png b7fa7018e6d828b9f417f69151f327e6 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-3 Title A name given to the resource Graywacke Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource The graywacke facies in the Mt. Merino member (where sample 4 also comes from). Graywacke is a hard, dark-colored sandstone. This sandstone represents a similar rock to the protolith for the quartzite of sample 10. The thin section shows quartz, feldspar, and lithics. This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism). This rock was collected from the west end of a large road cut where samples 1 and 2 were also collected from. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/22e62405382d1a0da8b99efbfba4166b.JPG 5e2b693dbe05f5e62f431e9675da4480 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-4 hand sample of kink fold in slate Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-4 Title A name given to the resource Slate Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Kink fold in a slate from the Mt. Merino Member. This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/190641d1ddf78964504e2c9ed30e8a60.JPG b98d04b346a6e28fd7ae31a817430fda Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-5 hand sample of graphitic slate https://www.geosciencecollections.milne-library.org/files/original/979dd870eea3c6f6666084784eaa8f73.png 5b429a8214aef5fd0541c40fd1ef51b7 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-5 Title A name given to the resource Graphitic slate Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource A highly graphitic slate in the Walloomsac slates. Contains pyrite. This rock also contains biotite, chlorite, muscovite, quartz, ilmenite, and pyrite. The thin section shows large biotite grains, and chlorite muscovite, and quartz. Fluid inclusions are pervasive. This rock is from the biotite zone of the Barrovian sequence (low-intermediate metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/54282253ffcdc5848e5cf61b2187ef47.JPG fb717c3880667b6ea6624d0df1c95c79 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-6 hand sample of garnet biotite schist https://www.geosciencecollections.milne-library.org/files/original/971e9053a6e12aa290522568d50a4703.png 63e23c43bd4758597b020e63ebbf23d4 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-6 Title A name given to the resource Garnet biotite schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Schist with sparse garnet. This schist is darker and graphitic. It also contains biotite, chlorite, muscovite, feldspar, and quartz. The thin section shows several large biotite grains with an included garnet, small quartz grains, muscovite, and many fluid inclusions. This rock is from the garnet zone in the Barrovian metamorphic sequence (intermediate metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/7354194eb0e26f78030566ded7fb8832.JPG 79ce4ff7427ab687f5fd38a19799f143 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-7 hand sample of chloritoid schist https://www.geosciencecollections.milne-library.org/files/original/fc7954a8f158112bcc2c160c5eb27286.png c024cabaf18f6334ab6d5b9518b3699d Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-7 Title A name given to the resource Chloritoid schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Schist with coarse chloritoid crystals (up to 1/8 inch) without preferred orientation. These crystals grow across the foliation developed in the schist, but appear deformed. Chloritoid is a silicate mineral made in metamorphism. It also contains garnet, muscovite, chlorite, feldspar, and quartz. The thin section shows a large chloritoid grain, and euhedral garnet. Fine-grained muscovite and biotite are present, along with strings of an opaque, likely graphite. This rock is from the garnet zone in the Barrovian metamorphic sequence (intermediate metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/13f4f6bbef9a849cee6c877a9c1a6ebf.JPG 36b0f68514398d74d80f3acc25ffab00 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-8 hand sample of staurolite chloritoid schist https://www.geosciencecollections.milne-library.org/files/original/f08dfb776353d7f0d7dc73956e8f6e77.png 95c735cce2e47e8da43487c3aee0fa66 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-8 Title A name given to the resource Staurolite chloritoid schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Schist bearing both staurolite and chloritoid. This marks the first appearance of staurolite in the metamorphic sequence. Also contains garnet, muscovite, chlorite, biotite, feldspar, and quartz. The assemblage in not in equilibrium. The thin section shows large chloritoid grains with staurolite (an assemblage not in equilibrium). Fine grained muscovite and biotite are also present, along with micro-crystalline quartz and several graphite strings. This rock is right at the transition between the garnet-staurolite zones in the Barrovian metamorphic sequence (intermediate (increasing) metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/47531d6403894d5f5d65265bc41c18ae.JPG 0419dea18864ce641f4cf75f89c67b4d Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-9 hand sample of staurolite schist https://www.geosciencecollections.milne-library.org/files/original/605ad53fdc36beb3aa64190885c4487d.png 80c1a83e8c657a20087d0842816ac3aa Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-9 Title A name given to the resource Staurolite schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Schist with coarse staurolite grains. This outcropping is approximately on the strike of the chloritoid schists (sample 7). Also contains garnet, muscovite, feldspar, and quartz. Presumed to be from the Everett Schist. The thin section shows staurolite, biotite, muscovite (noticeable by pleochroism differences) and quartz. This rock is from the staurolite zone in the Barrovian metamorphic sequence (higher intermediate metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/f05a8651bc19fbf711a34f2a176ddfb1.JPG 8121e6ce0af723edf437fdd686cbced0 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-10 hand sample of quartzite https://www.geosciencecollections.milne-library.org/files/original/805ecf6a88300839eb64e310c1869888.png fe5320668d17549ca1f4b7c6a069b789 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-10 Title A name given to the resource Quartzite Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised sandstone with a gray, glassy appearance. From the Paughquag quartzite, a late Cambrian formation. The basal Cambrian quartzite rests on pre-Cambrian gneisses. The thin section shows quartz and plag with some biotite and grain boundaries. Many fluid inclusions noticeable. This rock has a different protolith than the many pelitic schists around it. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/2a5001f821385ec55ab2f83f1b9e85de.JPG 3796ceb748f4956a3bc17af38a78706d Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-11 hand sample of kyanite biotite garnet schist https://www.geosciencecollections.milne-library.org/files/original/33e8694856feebfacd367078030d867a.png b596e1dcf288051ba79caa9d355a0abd Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-11 Title A name given to the resource Kyanite biotite garnet schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Schist with coarse biotite controlling foliation. Garnets visible in some hand samples. Kyanite blades without preferred orientation--at higher concentration within folds. Possibly from the Walloomsac schist. The PPL thin section shows biotite, muscovite, kyanite, and staurolite. This rock is from the kyanite zone of the Barrovian metamorphic sequence (high metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/bb6b93a66ddead1d820767cc1db3beda.JPG 14722bb82789ff65de1e7a844248b797 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-12 hand sample of muscovite schist DUCO-12 hand sample https://www.geosciencecollections.milne-library.org/files/original/eb6125fd1721ae24c621f7b10d11e56d.png 97ad61ef60bf3f13c871d03411da9f2e Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource ppl / xpl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-12 Title A name given to the resource Muscovite schist Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Extremely coarse-grained muscovite schist. Large garnets visible in hand sample. Sillimanite is not recognizable in hand sample, however. The thin section shows muscovite (with minor sillimanite) in a large band, biotite, staurolite, and quartz. This rock is from the sillimanite zone of the Barrovian metamorphic sequence (highest metamorphism). Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/2bccaa74d0d6fdc5001589e7bc05af4c.JPG 74b6062320018ed0fd8b7f0953b2543f Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-13 hand sample of marble https://www.geosciencecollections.milne-library.org/files/original/509d251e9059b712c742999f95da3b48.png 010c4581d5f3362fe74472687b3f1110 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-13 Title A name given to the resource Marble Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised Briarcliff dolostone. The thin section shows well-twinned dolomite grains with diopside at the bottom. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/f2efcd7881d69a9135228855899edea7.JPG 7c0af51b4e712b82a2e256cab54e8926 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-14 hand sample of marble https://www.geosciencecollections.milne-library.org/files/original/c5b735c1d368fe4fdfa2a1dfd839abd9.png 2f74f2f8626dce9876a1217bd8025a2b Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-14 Title A name given to the resource Marble Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised Briarcliff dolostone with visible micas. Contains diopside, tremollite, and phlogopite. At the metamorphic grade of the first sillimanite isograd. Thin section shows irregular dolomite grains in the center, with pleochroic phlogopite at top and tremolite at bottom. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/8efdd035b9a04d655111f63673060853.JPG b3bae3b0d5314b7e6b198e3e7dec4c84 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-15 hand sample of marble https://www.geosciencecollections.milne-library.org/files/original/b1dbef6df00761731e05cabedcc826c2.png 9544effd39a5e33a5db90862a6a9f257 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource xpl / ppl Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-15 Title A name given to the resource Marble Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised Balmville limestone with visible phlogopite crystals. Also contains actinolite. Thin section shows calcite with interspersed pleochroic phlogopite. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/0651d0debe18dfd2bbbca5819b92157c.JPG 9bb6277372be470a224aecb05945aea2 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource DUCO-16 hand sample of marble https://www.geosciencecollections.milne-library.org/files/original/6764b65268f7b55b140c3904ee0d12b5.png edd74634e311c810778b6759fbec86bb Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence Number of Thin Sections Number of thin sections associated with this sample 1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context DUCO-16 Title A name given to the resource Marble Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://geosciencecollections.milne-library.org/collections/show/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised Balmville limestone with visible phlogopite crystals. Also contains tremolite visible at the outcrop level. Within nose of anticline of Walloomsac schist. The PPL thin section shows a large irregular calcite grain with tremolite at the bottom. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. https://www.geosciencecollections.milne-library.org/files/original/a5187a6cc42cb138bfabb9630a8989a0.pdf 497f3a8671c6ecbbbb6d851258d07295 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Document A resource containing textual data. Note that facsimiles or images of texts are still of the genre text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Barrovian Metamorphic Sequence--Dutchess County, NY Western Minerals Supplementary Information Description An account of the resource OCR PDF of supplemental information for the Barrovian Metamorphic Sequence--Dutchess County, NY Date A point or period of time associated with an event in the lifecycle of the resource 1980 Identifier An unambiguous reference to the resource within a given context DUCO 1-16 Spatial Coverage Spatial characteristics of the resource. Dutchess County, NY Temporal Coverage Temporal characteristics of the resource. 450-430 Ma Publisher An entity responsible for making the resource available Western Minerals, Inc. Format The file format, physical medium, or dimensions of the resource PDF