Wedron and Mason groups
Subtitle: lithostratigraphic reclassification of deposits of the Wisconsin Episode, Lake Michigan Lobe area
By: Ardith K. Hansel, W. Hilton Johnson.
Contributors: Johnson, W. Hilton 1935-
Series: Bulletin / Illinois State Geological Survey ;; 104; Bulletin (Illinois State Geological Survey) ;; 104.
Publisher: Illinois State Geological Survey
Published: 1996
Place of publication: Champaign, IL
Language: eng
Number of pages: 116
Subjects: Glacial epoch -- Illinois.; Geology -- Illinois.
Notes: Includes bibliographical references (p. 65-72) and index.