Circular, Issues 323-334The Survey, 1961 - Geology |
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Common terms and phrases
abundant acanthopores Altonian Assemblage Zone average base covered sample Bluff Branson & Mehl bryozoan CaF2 calcareous Calcite carbonate Carbondale chert chlorite clay minerals clayey coal Collinson colluvium conodont contact angle County Cretaceous deposits Devonian dike dolomite entire zooecia Farmdale fauna feet thick fluorspar Formation Sandstone FT/SEC Geological Survey glacial Gnathodus gravel heavy minerals Illinois Illinois Geol ILLINOIS STATE GEOLOGICAL Jour kaolinite Kellerville Limestone liquid Loess Loose Powder lower massive Mattoon Mattoon Formation mature zone medium grained mesopores micaceous miles Mississippi Valley Missouri montmorillonite nd nd Ordovician outcrop oxide Paleocene Peoria Peoria Loess percent Pleasantview Pleistocene production range Rexroad rocks Roxana Roxana Silt sand Sandstone Sandstone Member Sangamon sediments shale silica siltstone silty Silurian Siphonodella Soil Spechts Ferry species stratigraphic Substage surface SW sec TABLE Tangential section Thebes Thebes Quadrangle thin bedded Total Ulrich upper Vitrain specimen VR VR Wabash Willman Wisconsinan Woodfordian zoarium zooecial wall