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Dayton and Brassfield Limestones

Dayton Limestone; gray to bluish-gray weathers grayish-white; medium to thick bedded; fine grained; dolomitic; 5 to 15 feet thick. Brassfield Limestone; white to pink, locally gray to reddish brown; irregular, thin to medium bedded; coarsely crystalline; abundant pelmatozoan fossils; grayish-green glauconitic partings; cliff forming; 20 to 50 feet thick. Interval ranges from 32 to 100 feet in thickness.
State Ohio
Name Dayton and Brassfield Limestones
Geologic age Silurian
Primary rock type limestone
Secondary rock type
Other rock types
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
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.
Counties Adams - Clinton - Highland - Warren