Short description:
Sand and Gravel Resource Potential, 1989 (1:500,000) - Identifies areas of the existence of sand and gravel resources and provides an approximate economic ranking of resource potential. This layer was derived by assigning qualitative assessments to each outcrop area in the following publication: Indiana Geological Survey Miscellaneous Map 49.

IndianaMap, IGS, Indiana, sand, gravel, surficial, unconsolidated, resource, mineral, industrial mineral, economy, geoscientificInformation

Indiana Geological Survey
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