Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>SILURIAN_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.</SPAN></P></DIV></DIV></DIV>