Surficial geology of Collinsville Quadrangle, Madison and St. Clair counties, Illinois

Relief shown by contours and spot heights"This research was supported in part by the Illinois Department of Natural Resources, Office of Water Resources Agreement S99-313, and by the U.S. Geological Survey, National Cooperative Geologic Mapping Program under USGS award number 00HQAG0151.""Base map compiled by Illinois State Geological Survey from digital data provided by the United States Geological Survey. Topography compiled from aerial photographs taken 1986. Field checked 1988. Map edited 1991.""Geology based on fieldwork by A. Phillips, 1999-2000.""Digital cartography by A. Phillips and M. Barrett, Illinois State Geological Survey."Includes disclaimer, index to adjoining quadrangles, and location mapText, 3 cross sections, 1 col. ill., 1 table, and 3 ancillary maps on sheet 2Includes bibliographical references on sheet