This large-format color map depicts the surficial geologic materials deposited during Quaternary time. The map classifies deposits as being from Holocene, Wisconsinan to Holocene, or Pre-Wisconsinan age. Areas with little or no Quaternary deposits are also shown. Scale: 1:500,000; Size: 31" x 43". Pair this map with the Bedrock Geologic Map of Indiana (MM48) to see the full picture of Indiana geology.
Gray, H. H., 1989, Quaternary geologic map of Indiana: Indiana Geological Survey Miscellaneous Map 49, scale 1:500,000.
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Indiana Geological and Water Survey
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