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GEOLOGY_BARTHOLOMEW_COUNTY_INDIANA.GDB is an Esri File Geodatabase that contains eight feature data sets and three geodatabase tables detailing the geology of Bartholomew County, Indiana. The data shows the distribution of gently west-southwest-dipping (15 to 20 ft per mile) Mississippian, Devonian, and Silurian sedimentary rocks along the eastern margin of the Illinois Basin, and so the youngest rocks are found high in the hills along the western margin of the county and the oldest rocks in the deepest valleys near the eastern margin of the county. Bedrock is close to the surface in the hills along the western margin of the county, so contacts between the gently dipping bedrock units nearly parallel surface contours. A complex network of deep paleovalleys filled mostly with glacial outwash deposits trends north-south in the central part of the county beneath broad fluvial terraces and valleys. Wisconsin ice-contact glacial deposits cover bedrock throughout most of the eastern third of the county.



Hasenmueller, W. A., and Rupp, R. F., 2017, Geologic data of Bartholomew County, Indiana [Esri geodatabase]: Indiana Geological and Water Survey Digital Information 13.


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Keywords: geology, Bartholomew County, geodatabase

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