Spatial Coverage: Illinois / Year: 1997 - Yale University Library GeoBlacklight Search Results

1. Bedrock geologic map of the St. Louis 30ʹ x 60ʹ quadrangle, Missouri and Illinois

1997. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Missouri, Saint Louis Region, Illinois, and East Saint Louis Region.

2. Karst terrains and carbonate rocks of Illinois

1997. 2007-04-18T14:26:51Z. 2011-03-28T21:44:20Z. Weibel, C. Pius. Dept. of Natural Resources, Illinois State Geological Survey. English. Public. Illinois.

3. Rock-stratigraphic nomenclature, lithology, and subcrop area of the Galena-Platteville bedrock unit in Illinois and Wisconsin

1997. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Wisconsin, Platteville Region, Illinois, and Galena Region.