Browse Items (35 total)

  • Collection: (BB) Boulder Batholith Suite -- Montana

from nearly vertical dike cutting quartz monzonite

flinty, columnar jointing, post-batholith volcanic

intrusive plug of quartz monzonite

fine grained, light gray

medium grained, dark grey, biotite-hornblende granodiorite

medium grained, light gray

coarse grained, medium gray

coarse grained, light gray

coarse grained, light gray biotite-hornblende

porphyritic, light gray, fine grained

fine grained, dark gray, porphyritic

coarse grained, light gray, biotite-hornblende

fine grained with pinkish tint

Output Formats

atom, dcmes-xml, json, omeka-xml, rss2