Bulletin of the Geological Society of America, Volume 71,Nummers 1-5

albite America Bull analyses andesite arkose augite basalt beds biotites block breccia calcite carbonate cent chaos chlorite clastic clay Colton commonly composition conglomerate Creek deposits dikes dolomite east Emeryville Engel Eocene epidote fault feet feldspar FIGURE fine-grained folding fossils fragments garnets Geol Geology gneiss grade grains granitic granodiorite gray Guye formation interbedded Kachess Keechelus knickpoint Lake lavas least altered gneiss limestone Maestrichtian matrix Mayagüez metamorphism mica miles minerals Mountain Naches formation Newfoundland occur outcrop Pahrump Paleocene paragneiss pebbles peridotite phenocrysts plagioclase Plate quartz Quartzite region rhyolite ridge samples San Germán sandstone schist sedimentary rocks sediments serpentinite shale silica Silurian Silurian Hills Silver Pass slope Smith and Calkins Snoqualmie specimens stratigraphic structure Swauk syncline Table Teanaway Teanaway basalt Tertiary thick tion tuff unconformably Univ unpub Valley Villa de Cura volcanic rocks Yakima zone