UNCONSOLIDATED THICKNESS --
Thickness of Unconsolidated Deposits, 1983 (1:500,000)
Shows thickness ranges of unconsolidated deposits (everything above the bedrock). The thickness ranges consist of 50-foot increments (0 to 50, 50 to 100, etc.).
Digitized from the following published paper map: Indiana Geological Survey Miscellaneous Map 37.
FGDC metadata: UNCONSOL_TH_MM37_IN