Short description:
Silurian Reefs, 1992 (1:500,000) - Shows Silurian reefs, which are geologically significant in the exploration and development of oil and gas fields and industrial minerals. Digitized and modified from the following published map: Indiana Geological Survey Miscellaneous Map 54. This shapefile can be used in conjunction with SILURIAN_REEF_POLYGONS_MM54_IN.SHP.

IndianaMap, IGS, Indiana, reef, fossil, paleobiology, paleontology, limestone, bedrock, petroleum, economy, geoscientificInformation

Indiana Geological Survey
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