Traverse Group (OHDts;0)

Traverse Group - Dolomite and shale interbedded with limestone; upper part dolomite; gray to light brown; thin to medium bedded; abundant chert; lower part shale interbedded with limestone; olive gray; thin to medium bedded; very fossiliferous; as much as 170 feet thick.

State	Ohio
Name	Traverse Group
Geologic age	Devonian
Original map label	Dts
Primary rock type	dolostone (dolomite)
Secondary rock type	shale
Other rock types	limestone; chert
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed)upper part dolomite; gray to light brown; thin to medium bedded; abundant chert. Minor Sedimentary > Carbonate > Limestone (Bed)lower part, shale interbedded with limestone; olive gray; thin to medium bedded; very fossiliferous; as much as 170 feet thick. Sedimentary > Clastic > Mudstone > Shale (Bed)lower part shale interbedded with limestone; olive gray; thin to medium bedded; very fossiliferous; as much as 170 feet thick. Incidental Sedimentary > Chemical > Chert (Bed)upper part, abundant chert.
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.
Geographic coverage	Defiance - Fulton - Henry - Lucas - Paulding