Browse Items (35 total)

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

BB.pdf

porphyritic, light gray, fine grained

fine grained, dark gray, porphyritic

iron-stained

coarse grained, light gray, biotite-hornblende

ignimbrite layer in a welded tuff

flinty, columnar jointing, post-batholith volcanic

from large sill

fine grained with pinkish tint

from nearly vertical dike cutting quartz monzonite

pre-batholith volcanic

intrusive plug of quartz monzonite

Output Formats

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