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Title: Bedrock Geology of Oregon Quadrangle, Ogle County, Illinois
Author: Mary J. Seid
Description: Two 36" × 30" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, cross section, and descriptive text.
Year: 2010 STATEMAP
File size: 19 mb
Ordering information for Illinois State Geological Survey publications
Updated 07/16/2012 SLD