Maps

Indiana Bedrock Geology Map

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Move your mouse pointer over the map to see the names of bedrock units. Right-click or command-click the image to zoom in for a clearer view or to print.

This map shows the geologic units at the surface of the bedrock. In the south-central part of the state, the bedrock is at or very near the surface. The flanks of the southern half of the state and the entire northern half of the state are overlain by tens to hundreds of feet of unconsolidated sediments. For more information about this map, see Bedrock Geology of Indiana.