Copyright Text: Characterization of fill deposits in the Calumet region of northwestern Indiana and northeastern Illinois
1997, Kay, R. T.; Greeman, T. K.; Duwelius, R. F.; King, R. B.; Nazimek, J. E.; Petrovski, D. M.
USGS Water-Resources Investigations Report: 96-4126
Value: Natural Materials (Sand and Clay),40 to less than 60 feet Label: Natural Materials (Sand and Clay), 40 to less than 60 feet Description: Symbol:
Value: Natural Materials (Sand and Clay),20 to less than 40 feet Label: Natural Materials (Sand and Clay), 20 to less than 40 feet Description: Symbol:
Value: Natural Materials (Sand and Clay),10 to less than 20 feet Label: Natural Materials (Sand and Clay), 10 to less than 20 feet Description: Symbol: