University of Illinois Urbana-Champaign

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Showing 31–60 of 2,451 items
Thumbnail for Geochemical and petrographic analysis of the Sparks Hill Diatreme and its relationship to the Illinois-Kentucky fluorspar district
Geochemical and petrographic analysis of the Sparks Hill Diatreme and its relationship to the Illinois-Kentucky fluorspar district
Denny, F. Brett; Maria, Anton H.; Mulvaney-Norris, Joseph L.; Guillemette, Renald N.; Cahill, Richard A.; Fifarek, Richard H.; Freiburg, Jared T.; Anderson, Warren, H.

Thumbnail for Map showing geologic materials in the vicinity of the lower Wabash Valley Illinois, Indiana, and Kentucky
Map showing geologic materials in the vicinity of the lower Wabash Valley Illinois, Indiana, and Kentucky
Hester, James C.; Krumm, Robert J.; Keith, Brian D.; Rupp, Robin F.; Cordiviola, Steve

Thumbnail for Geological and geophysical maps of the Illinois Basin-Ozark Dome region
Geological and geophysical maps of the Illinois Basin-Ozark Dome region
Abert, Curtis C.; Marshak, Stephen; Larson, Timothy H.

Thumbnail for Mississippian border of eastern interior basin
Mississippian border of eastern interior basin
Weller, James Marvin; Sutton, Arle H.

Thumbnail for Distribution of boghead algae in Illinois Basin coal beds
Distribution of boghead algae in Illinois Basin coal beds
Peppers, Russel Allen; Harvey, Richard David

Thumbnail for Geology of the Waltersburg Quadrangle, Pope County, Illinois
Geology of the Waltersburg Quadrangle, Pope County, Illinois
Weibel, C. Pius; Nelson, W. John; Oliver, Lynne B.; Esling, Steven P.

Thumbnail for Geology of Olmsted Quadrangle, Pulaski County, Illinois
Geology of Olmsted Quadrangle, Pulaski County, Illinois
Nelson, W. John; Denny, F. Brett; McBride, John H.; Williams, Laura