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Bedrock Geology, 1987 (1:500,000) - Shows systems and selected groups, formations, and other stratigraphic units. Generalized lithologic characterizations are also provided, as well as hyperlinks to the Compendium of Paleozoic Rock-Unit Stratigraphy in Indiana. Digitized from the following published paper map: Indiana Geological Survey Miscellaneous Map 48.

Dataset Attributes

  • OBJECTID
    Number
  • Shape
    Number
  • STRATA
    Text
    {"value"=>"P1", "count"=>127} (), {"value"=>"M4", "count"=>78} (), {"value"=>"M5", "count"=>51} (), {"value"=>"D", "count"=>46} (), {"value"=>"M2", "count"=>40} (), {"value"=>"M6", "count"=>32} (), {"value"=>"M3", "count"=>32} (), {"value"=>"P2", "count"=>31} (), {"value"=>"P4", "count"=>28} (), {"value"=>"M1", "count"=>20} ()
  • SYSTEM
    Text
    {"value"=>"Mississippian", "count"=>255} (), {"value"=>"Pennsylvanian", "count"=>204} (), {"value"=>"Devonian", "count"=>55} (), {"value"=>"Silurian", "count"=>45} (), {"value"=>"Ordovician", "count"=>27} (), {"value"=>"Devonian-Mississippian", "count"=>20} (), {"value"=>"Lake", "count"=>1} ()
  • ROCK_UNITS
    Text
    {"value"=>"Raccoon Creek Group", "count"=>127} (), {"value"=>"West Baden Group", "count"=>78} (), {"value"=>"Stephensport Group", "count"=>51} (), {"value"=>"Muscatatuck Group", "count"=>46} (), {"value"=>"Sanders Group", "count"=>40} (), {"value"=>"Buffalo Wallow Group", "count"=>32} (), {"value"=>"Blue River Group", "count"=>32} (), {"value"=>"Carbondale Group", "count"=>31} (), {"value"=>"Bond Formation", "count"=>28} (), {"value"=>"Borden Group", "count"=>20} ()
  • ROCK_TYPE
    Text
    {"value"=>"Mostly shale and sandstone; also includes thin beds of limestone, clay, and coal.", "count"=>158} (), {"value"=>"Shale, sandstone, and micritic and skeletal limestone.", "count"=>78} (), {"value"=>"Sandstone, micritic and skeletal limestone, and shale.", "count"=>51} (), {"value"=>"Dolomite and limestone.", "count"=>46} (), {"value"=>"Mostly shale and sandstone; also includes thin beds of limestone and coal.", "count"=>42} (), {"value"=>"Mostly skeletal limestone. Cherty in lower part.", "count"=>40} (), {"value"=>"Mosty shale and sandstone; also includes thin beds of micritic limestone.", "count"=>32} (), {"value"=>"Mostly micritic, skeletal, and oolitic limestone.", "count"=>32} (), {"value"=>"Mostly siltstone; lenses of crinoidal limestone in upper part. Much cherty and silty limestone and dolomite in northwest.", "count"=>20} (), {"value"=>"Black and greenish-gray shale.", "count"=>20} ()
  • MORE_INFO
    Text
    {"value"=>"http://igs.indiana.edu/compendium/comp976s.cfm", "count"=>127} (), {"value"=>"http://igs.indiana.edu/compendium/comp1bms.cfm", "count"=>78} (), {"value"=>"http://igs.indiana.edu/compendium/comp4eck.cfm", "count"=>51} (), {"value"=>"http://igs.indiana.edu/compendium/comp4hb8.cfm", "count"=>46} (), {"value"=>"http://igs.indiana.edu/compendium/comp8uuc.cfm", "count"=>40} (), {"value"=>"http://igs.indiana.edu/compendium/comp7q90.cfm", "count"=>32} (), {"value"=>"http://igs.indiana.edu/compendium/comp678k.cfm", "count"=>32} (), {"value"=>"http://igs.indiana.edu/compendium/comp131g.cfm", "count"=>31} (), {"value"=>"http://igs.indiana.edu/compendium/comp592c.cfm", "count"=>28} (), {"value"=>"http://igs.indiana.edu/compendium/comp5z8k.cfm", "count"=>20} ()
  • Shape_Length
    Number
  • Shape_Area
    Number

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