Bulletin of the Geological Society of America, Volume 19The Society, 1908 - Geology Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately. |
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Common terms and phrases
Algonkian American appears Archean arid Aucella basal basin Beekmantown Big Cottonwood Bulletin Cambrian canyon Carboniferous clay color Colorado conglomerate creek Cretaceous deposits Devonian district dolomite east erosion evidence fauna feet thick figure formation forms Fort Snelling fossils GEOL geologists glacial gneisses gorge Grabau manuscript gradient granite gravel gray horizon Huronian igneous Jurassic lake Laramie Laramie mountains later layers limestone loess lower Lowville massive Meguma miles minerals Minnesota Mississippi mountains occur Ordovician outcrops Paleozoic Pamelia particles pebbles plains plant beds portion Potsdam pre-Cambrian present probably Professor proustite quartz quartzite radioactive radium red shale Redstone region Report rhyolite ridge river Warren rock-floor rocks Saint Anthony falls sand sandstone sediments shale shore side Silurian slope species strata stratigraphic stream surface temperature terrace thin Thomas range tion topaz topaz crystals U. S. Geological Survey unconformity upper valley wind Yukon