Geological Society of America Bulletin, Volume 72The Society, 1961 - Geology Vols. for 1938-61 include as pt. 2 of the December issue the Society's Abstracts, later published separately. |
Contents
Introduction and acknowledgments | 1022 |
Origin of cyclothems of the Dunkard group upper Pennsylvanianlower Permian | 1029 |
Submarine topography of the western Straits of Florida | 1051 |
48 other sections not shown
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Common terms and phrases
alluvial America Bull andesite angular Baker Coal basalt basin Beartooth block Beartooth Mountains biotite Botucatú sandstone Boulder breccia calcite Cambrian canyon carbonate cent channel chlorite clastic clay minerals Coal Bed conglomerate correlation County Creek Cretaceous cross-bedding crystal crystalline cyclothems deposition depth Devonian displacement dolomite Dunkard early basic breccia east Eocene eolianite fault feet feldspar Figure formation fossil fragments glacial grains granite Granodiorite Hills paleosol horizon Illinois indicate Jour layer limestone lithologic lower magnetic marine ment mica miles Montana Ordovician origin outcrop paleosol Paleozoic Pennsylvanian perlite Petrology Pliocene Precambrian principal strains quartz quartzite region rhyolitic River samples sand sandstones Seal Lake sedimentary rocks sediments shale shear Shore Hills slope soil stratigraphic structural surface Survey Table tectonic Tertiary thick thin tion tourmaline trend tuff U. S. Geol unit uplift Valley vertical volcanic Wyoming Yellowstone zone