Indiana Geological SurveySILURIAN_REEF_POINTS_MM54_IN is a point shapefile that shows the locations of Silurian rock reef formations in Indiana. These data include five categories: (1) buried reef masses, (2) exposed reef, (3) exposed reef in active stone quarries, (4) reef-induced structure in overlying rocks, and (5) reef-induced structure in overlying rocks related to oil, gas, and gas storage fields. This shapefile can be used in conjunction with SILURIAN_REEF_POLYGONS_MM54_IN.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/e0ae63d1426647a587c0e77a4bc41561_98engIndianaMapPublicSilurian Reefs Points [Indiana]Web servicesIndianaLast Modified: 2025-01-23