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Bellefonte Formation

Bellefonte Formation - Medium-gray, brownish-weathering, medium-bedded dolomite and minor sandstone; very fine grained Tea Creek Member above, and crystalline Coffee Run Member below.
StatePennsylvania
NameBellefonte Formation
Geologic ageOrdovician
Original map labelObf
Primary rock typedolostone (dolomite)
Secondary rock typesandstone
Other rock types
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)medium-gray, brownish-weathering, medium-bedded dolomite
Minor
Sedimentary > Clastic > Sandstone (Bed)
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
Geographic coverageBedford - Centre - Clinton - Franklin - Fulton - Huntingdon - Lycoming - Mifflin

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PAObf;15
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