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Epler Formation

Epler Formation - Thick-bedded, medium- to medium-dark-gray, finely crystalline limestone, weathering light gray; yellow dolomitic laminae; interbedded medium-dark-gray, finely crystalline dolomite, weathering yellowish gray; edgewise conglomerate; fossil-fragment and oolitic lenses.
State Pennsylvania
Name Epler Formation
Geologic age Ordovician
Primary rock type limestone
Secondary rock type dolostone (dolomite)
Other rock types conglomerate
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)thick-bedded, medium- to medium-dark-gray, finely crystalline limestone, weathering light gray
Sedimentary > Carbonate > Dolostone (Bed)yellow dolomitic laminae; interbedded medium-dark-gray, finely crystalline dolomite, weathering yellowish gray
Incidental
Sedimentary > Clastic > Conglomerate (Bed)edgewise conglomerate; fossil-fragment and oolitic lenses
Map references
Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip
Unit references
Berg, T. M., Edmunds, W. E., Geyer, A. R., and others, compilers, 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey, 4th ser., Map 1, 2nd ed., 3 sheets, scale 1:250,000.
Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip