Item Number: RP20
Map Scale: 1:48,000

ABSTRACT: Preliminary engineering geology investigations have been made of four proposed dam sites and their reservoir areas in the valley of the East Fork of the Muscatatuck River and its tributaries, Big Camp and Big Graham Creeks, in northern Scott County, southern Jennings County, and western Jefferson County, Ind. In this report the geologic column of the area has been divided, according to engineering characteristics, into five units. The bedrock consists of (in ascending order) unit 1, the Osgood Formation and the Laurel Limestone of Silurian age; unit 2, the Waldron Shale and the Louisville Limestone of Silurian age and the Geneva Dolomite and the Jeffersonville Limestone of Devonian age; unit 3, the North Vernon Limestone of Devonian age; and unit 4, the Devonian portion of the New Albany Shale. These rocks are overlain at most places by unit 5, the unconsolidated materials that range in character from red residual limestone soils to glacial till.

Winslow, J. D. 1960, Preliminary engineering geology report of dam sites on the East Fork of the Muscatatuck River in Scott, Jennings, and Jefferson Counties, Indiana: Indiana Geological Survey Report of Progress 20, 30 p., 3 fig., 5 pl.

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Keywords: Osgood Formation, Laurel Limestone, Waldron Shale, Louisville Limestone, Geneva Dolomite, Jeffersonville Limestone, New Albany Shale, engineering geology

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