Bulletin of the Geological Society of America, Volume 32Geological Society of America, 1921 - Geology Vols. for 1938-61 include as pt. 2 of the December issue the Society's Abstracts, later published separately. |
Contents
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Common terms and phrases
Abstract andesite augite bands basalt beds biotite By-Laws carbonate cent chert chondrite chondrules clay climatic Colorado concretions conglomerate Council County Cranes Flat Cretaceous December deposits Devonian diastrophism Died dikes earth East Butte elected erosion evidence fault fauna feet feldspar FIGURE forms fossils geography Geol Geological Society geologists glacial gneisses granite gravels gypsum hornblende igneous rocks intrusive Iowa laccolith Lake limestone Lower mass material metamorphism miles minerals Montana Mountains North occur origin orthoclase Paleontological Society Paleozoic paper pebbles petroleum phenocrysts plagioclase Pleistocene Pliocene porphyry pre-Cambrian present probably Quadrangle quartz quartzite range region rhyolite River salinity sandstone schists Secretary sedimentary sediments shale sills Society of America South America species stone structure surface Sweet Grass Hills temperature Texas thickness tion township types U. S. Geological Survey unconformity Univ University uplift Upper Valley volcanic volume Washington West Butte Windrow formation Wisconsin


