Unconsolidated Thickness Contours, 20140630 - Shows contours depicting the thickness of unconsolidated sediments in Indiana, using a 50 foot contour interval. It was produced from the DEM named "UNCONSOLIDATED_THICKNESS_DEM_100M_IGS_IN," which was created by subtracting bedrock surface elevation DEM named "BEDROCK_SURFACE_DEM_100M_IGS_IN" from Indiana surface elevation DEM "Surface_DEM_100M_IGS_IN." A published paper map titled "Map Showing Thickness of Unconsolidated Deposits in Indiana (2016)" (Misc. Map 95B) showing these data can be obtained from the following URL of the Indiana Geological Survey: https://igs.indiana.edu/bookstore/details.cfm?ItemID=3727&Pub_Num=MM95B

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Indiana Geological Survey