Prout Limestone (OHDp;0)

Limestone; olive gray; dolomitic in part; hard, siliceous; irregular bedding; pyrite, glauconite and phosphatic bone fragments at upper contact; 0 to 9 feet thick. Devonian (Givetian) Prout Limestone in OH contains corals superficially similar to those of lower part of Jaycox Shale Member of Ludlowville Formation in NY (Oliver, in press).

State	Ohio
Name	Prout Limestone
Geologic age	Devonian
Original map label	Dp
Comments	Secondary unit description from USGS Lexicon website (ref. OH017) and OH004: Devonian (Givetian) Prout Limestone in OH contains corals superficially similar to those of lower part of Jaycox Shale Member of Ludlowville Formation in NY (Oliver, in press).
Primary rock type	limestone
Secondary rock type	dolostone (dolomite)
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (glauconitic)olive gray; dolomitic in part; hard, siliceous; irregular bedding;; pyrite, glauconite and phosphatic bone fragments at upper contact; 0 to 9 feet thick. Minor Sedimentary > Carbonate > Dolostone (glauconitic)dolomitic in part
Map references	Digital Ohio map from CD produced as a result of a contract between the U.S. Geological Survey and the Ohio Geological Survey. Released with permission of the Ohio Geological Survey, June 2005.
Unit references	Digital Ohio map from CD produced as a result of a contract between the U.S. Geological Survey and the Ohio Geological Survey. Released with permission of the Ohio Geological Survey, June 2005. File of unit descriptions received from Ohio Geological Survey. Oliver, W.A., Jr., in press, Stage boundary recognition based on rugose corals; Eastern Americas Realm: Courier Forschungsinstitut Senckenberg, __, (Devonian Subcommission volume on boundary decisions). USGS Geologic Names Lexicon (GEOLEX) [http://ngmdb.usgs.gov/Geolex/]
Geographic coverage	Erie - Huron - Seneca