Clay mineralogy of Pleistocene and Pennsylvanian sediments in east-central Illinois

Illinois State Geological Survey and the University of IllinoisOpe

Quaternary faulting in the New Madrid seismic zone in southernmost Illinois

U.S. Geological Survey, Department of the Interior, National Earthquake Hazards Reduction Program Award No. 1434-95-G-2525Ope

Surficial geology of Crab Orchard Lake Quadrangle, Williamson County, Illinois

"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004."Relief shown by contours and spot heights"Digital cartography by Jane E. J. Domier ... [et al.].""Ã 2010 University of Illinois Board of Trustees."Includes location map, index to adjoining quadrangles, and index to Williamson County surficial geology and 7.5-minute quadrangle

Surficial geology of Crab Orchard Quadrangle, Williamson County, Illinois

"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004."Relief shown by contours and spot heights"Illinois State Geological Survey.""Ã 2010 University of Illinois Board of Trustees."Includes location map, index to adjoining quadrangles, and index to Williamson County surficial geology and 7.5-minute quadrangle

Surficial Geology of Johnston City Quadrangle, Williamson and Franklin Counties, Illinois

Mode of access: Internet; current access through PURLRelief shown by contours and spot heights"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004.""Digital cartography by Jane E.J. Domier, Jennifer E. Carrell, Amanda Tovey, Joseph B. Magnotta, and Daniel R. Stevenson, Illinois State Geological Survey.""[Copyright] 2010 University of Illinois Board of Trustees."Includes location map, index to adjoining quadrangles, and index to Williamson County geology and 7.5-minute quadrangle

Surficial Geology of Marion Quadrangle, Williamson County, Illinois

"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004."Relief shown by contours and spot heights"Ã 2010 University of Illinois Board of Trustees."Includes location map, index to adjoining quadrangles, and index to Williamson County surficial geology and 7.5-minute quadrangle

Surficial Geology of Herrin Quadrangle, Williamson and Franklin Counties, Illinois

Mode of access: Internet; current access through PURLRelief shown by contours and spot heights"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004.""Digital cartography by Jane E.J. Domier, Jennifer E. Carrell, Amanda Tovey, Joseph B. Magnotta, and Daniel R. Stevenson, Illinois State Geological Survey.""[Copyright] 2010 University of Illinois Board of Trustees."Includes location map, index to adjoining quadrangles, and index to Williamson County geology and 7.5-minute quadrangle

Quaternary faulting in the New Madrid seismic zone in southernmost Illinois

U.S. Geological Survey, Department of the Interior, under USGS award number 1434-95-G-2525Ope

Quaternary records of central and northern Illinois.

Prepared for the ninth biennial meeting of the American Quaternary Association held in Urbana-Champaign, Illinois, May 31-June 6, 1986.Sponsored by the Illinois State Geological and Water Surveys, the Illinois State Museum, and the University of Illinois Departments of Geology, Geography and Anthropology.Includes bibliography (p. 76-82)

Surficial Geology of Pittsburg Quadrangle, Williamson and Franklin counties, Illinois

"Geology based on field work and data analysis by Leon R. Follmer and W. John Nelson, 2001-2004."Relief shown by contours and spot heights"Ã 2010 by the Board of Trustees of the University of Illinois."Includes location map, index to adjoining quadrangles, and index to Williamson County surficial geology and 7.5-minute quadrangle