Browse Items (22 total)

  • Collection: (GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona

http://dl.dropbox.com/u/66399955/GC-6.JPG
Green clay lithology of the Bright Angel Shale.

Both thin section images were taken at a 400x magnification.

http://dl.dropbox.com/u/66399955/GC-2.JPG
Part of the The Granite Gorge Metamorphic Suite, this is usually considered a metavolcanic, and its mineralogy is dominated by quartz and mica.

Both thin section images were taken at a 400x magnification.
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