Surficial Geology Map, Grafton Quadrangle (Illinois Portion), Jersey and Calhoun Counties, Illinois

Grimley, David A.

Publication date

January 1999

Publisher

Champaign, Ill.: Dept. of Natural Resources, Illinois State Geological Survey

Abstract

Computer generated mapRelief shown by contours and spot heightsIncludes 2 inset cross-sections, col. ill., text, index to adjoining 7.5-minute quadrangles, and location map"Base map compiled at the Illinois State Geological Survey (ISGS) from digital line data (1990) provided by the U.S. Geological Survey and the ISGS."Includes bibliographical reference

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Surficial Geology Map, Grafton Quadrangle (Illinois Portion), Jersey and Calhoun Counties, Illinois

Abstract

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Surficial Geology Map, Grafton Quadrangle (Illinois Portion), Jersey and Calhoun Counties, Illinois

Abstract

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