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Onondaga and Old Port Formations, undivided

Onondaga and Old Port Formations, undivided - Includes, in descending order, the Onondaga Formation (Don), Ridgeley Member of Old Port Formation (Dor), and Shriver, Mandata, Corriganville, and New Creek Members of Old Port Formation, undivided (Dosn).
StatePennsylvania
NameOnondaga and Old Port Formations, undivided
Geologic ageDevonian
Original map labelDoo
Primary rock typeshale
Secondary rock typesandstone
Other rock typeslimestone; chert; shale; siltstone; bentonite
Lithologic constituents
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 - Blair - Carbon - Centre - Clinton - Columbia - Franklin - Fulton - Huntingdon - Juniata - Luzerne - Lycoming - Mifflin - Montour - Northumberland - Perry - Schuylkill - Snyder - Union

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PADoo;19
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