(BKM) Belknap Mountains Ring Complex -- White Mountains, New Hampshire
Title
(BKM) Belknap Mountains Ring Complex -- White Mountains, New Hampshire
Collection Items
Granite
coarse grained, porphyritic
Quartz syenite dike
contact with wall rock is sharp and with very thin, chilled margin
Syenite ignimbrite dike
banded, pink to gray color, sharp contact, some hydrothermal alteration has ocurred
Quartz syenite
porphyritic, pink, coarse grained
Monzodiorite
abundant dark xenoliths
Diorite
brecciated
Granite
fine grained
Vent agglomerate dike
with pink syenite xenoliths
Syenite
coarse grained
Trap shenite breccia
fine grained trap with abundant fragments of brecciated syenite
Gabbro
contains clots of black spheroids