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
Lithologic constituents
Major
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.
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 > Carbonate > Dolostone (Bed)upper part dolomite; gray to light brown; thin to medium bedded; abundant chert.
Incidental
Sedimentary > Chemical > Chert (Bed)upper part, abundant chert.
References

Slucher, E.R., (principal compiler), Swinford, E.M., Larsen, G.E., and others, with GIS production and cartography by Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey Map BG-1, version 6.0, scale 1:500,000.

NGMDB product
Counties Defiance - Fulton - Henry - Lucas - Paulding