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Title: Surficial Geology of Alton Quadrangle, Madison County, Illinois
Author: David A. Grimley
Description: 32" × 88" map sheet; includes legend, descriptive text, inset maps (2), photographs (3) and cross sections (2)
Year: 1999; originally STATEMAP 1997
Series ID: IGQ Alton-SG
File size: 23.3 mb
GIS data: 15 mb zip file (contains ArcGIS geodatabase and metadata, ArcReader map document, and published map in PDF format)
Map image not yet available.
Authors: F. Brett Denny and Joseph A. Devera
Description: Please contact authors for information.
Year: 1997 STATEMAP
Ordering information for Illinois State Geological Survey publications
Updated 07/11/2012 SLD