State by State


  • Specimen Number


  • Description

    Fractured block of massive, uniform, cream-colored limestone with irregular brown inclusions. Appears grainy in close-up as a clast-supported carbonate sand composed mostly of shell fragments, most of which are elongated. A grainstone.  Many detrital fossil fragments possibly with some minor silicate sand. Resembles the famous nearby Salem Limestone in texture and composition. Nowhere it visibly oolitic.

  • Classification

    Sedimentary. Limestone. Grainstone.

  • Location & Occurrence

    Unknown.  Shallow seas with currents to form carbonate sandstone.  A search for the similar  "Salem Limestone" results in: "cross-bedded calcarenite.... Individual grains are mostly microfossils ..."

  • Geological Age

    Mississippian (?)

  • Geoheritage

    This is the pavilion's stand-in for the Salem Limestone, which was intensively quarried and shipped via railroad to produce much of the architectural dimension stone in the United States.

  • Links

    Link to State Geological Map from USGS.  Link to Indiana Geological & Water Survey.  Similar to Salem Limestone.

  • Other

Click here for an explanation of categories and illustrations

Specimen stone for Indiana.
Alt Text for Image Here Outline Map of Indiana Geol Map Indiana