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Illinois Preliminary Geologic Map - GrayslakeSurficial Geology![]()
Click to view or right-click to download Author: Andrew J. Stumpf Description: 33" × 56" double map sheet; sheet 1 includes maps and legend; sheet 2 includes descriptive text, inset map, cross sections (2) and stratigraphy schematic Year Delivered: 2004 (originally STATEMAP 2004) File size: 14.0 mb PDF Hardcopy: $15.00 Ordering information for Illinois State Geological Survey Publications.
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| Updated 12/31/2008 SLD | |||||