Bulletin of the United States Geological Survey, Issues 163-167U.S. Government Printing Office, 1900 - Geology |
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acid analcite analysis andesite Aroostook Railroad Aroostook River Ashland augite Bangor and Aroostook beds Bull calcareous calcite Castle Hill cent Chapman sandstone character chloride Chonetes clays cleavage coal color conglomerates containing County Creek Cretaceous crystals described diabase dikes Eagle Pass Eocene fauna feet feldspar Ficus formation fossils fragments Gaspé Geological Survey grains granite groundmass Hall Laramie lava ledge Lesquereux limestone localities Lower Helderberg Maine Mapleton Masardis microscope mile west mineral Mountains nervation occurs Oriskany Orthis orthoclase outcrops plications Point of Rocks population post village Presque Isle quartz region reported Rept Rhynchonella rhyolite road Salt Lake San Carlos Santo Tomas seam Sevier shales Shaly shows Silurian slates sodium solution species specimens Spirifer Spirifera Square Lake Strophomena Tert teschenite Texas thick tion Township Trace trachytic trimetaphosphimic tuff U. S. Geol upper Utah valley volcanic Wyoming


