Browse Illinois State Geological Survey (ISGS) by Contributor "Kempton, John P."
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(Illinois State Water Survey and the Illinois State Geological Survey, 1995)The confluence of the buried Mahomet and Mackinaw Bedrock Valleys, underlying southwest McLean and southeast Tazewell Counties, contains part of one of the largest sand and gravel aquifers in Illinois—the Sankoty-Mahomet ...
(Illinois State Water Survey and the Illinois State Geological Survey, 1995)
Illinoian and Wisconsinan stratigraphy and environments in northern Illinois : the Altonian revised (Champaign Ill. : Illinois Dept. of Energy and Natural Resources, State Geological Survey Division,, 1985)