Bedrock Geology Map of Illinois

Title: Bedrock Geology Map of Illinois
Compiled by: Dennis R. Kolata
Contributions by: F. Brett Denny, Joseph A. Devera, Ardith K. Hansel, Russell J. Jacobson, Zakaria Lasemi, Christopher S. McGarry, W. John Nelson, Rodney D. Norby, Colin G. Treworgy, and C. Pius Weibel
Cartography by: Curtis C. Abert, Christopher S. McGarry, Scott Medlin, and Barbara J. Stiff
Description: Two 34" × 41" map sheets
Year: 2005
Series: IMAP 14
File size: Map sheet 1, 13.2 mb; Map sheet 2, 8.1 mb