Circular, Issues 470-475The Survey, 1972 - Geology |
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acoustic Ancona aquifer argillaceous Assistant Geologist Associate Geologist bedrock beds biocalcarenite brownish gray calcareous CALIFORNIA LIBRARY chert clayey Coal coarse-grained contains core Creek crinoidal Cypress Ditch Auger depth dolomitic early Woodfordian Eau Cl electrical logs Equality Formation faunas FCIP feet above base flow foot fossil fossiliferous fresh water G.L. Top Galesville Gallatin Gallatin County gastropods geodes Geological Geologist Illinoian Illinois Basin Illinois Geol inches thick Ironton-Galesville K.B. Top Lake Michigan lake plain Lake Saline light gray lithology LOCALITY loess Louis Limestone McLean County medium-grained mottled nodules NW Sec outcrop outwash Overburden Oxville Pennsylvanian Peoria Loess percent chert percent soluble Ph.D Piatt Counties Pleistocene Pleistocene Series Research Assistant rock Salem Limestone Saline River sample Sand Sandstone Section sediments shale Shawneetown Silt Siltstone Silty clay Simon Aquifer stratigraphic surface Survey Technical Assistant Top perfs valleys velocity Wabash weathered Willman Wisconsinan yellowish brown