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Start Over Year 1970 Publisher Indiana Geological Survey Bounding Box -180 -89.81531 180 89.456192

1. Map of Indiana showing bedrock geology

Maps Public content
1970. Purcell, Roger L. Includes geological cross-section. Scale approximately 1:1,800,000. Adapted from Regional Geologic Map series, Indiana Geological Survey; drafted b... Indiana Geological Survey.

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