Surficial Geology of the Chicago Region: Steger and Dyer Quadrangles
Map from Bulletin 65: Geology of the Chicago Region: Part II, The Pleistocene, 24 maps, 1:24,000. (Part I not available online)
GIS download contains ArcGIS geodatabase and metadata, ArcReader map document, and published map in PDF format (GIS file contents).
Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.
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