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Chickies Formation

Chickies Formation - Light-gray, hard, massive, Scolithus-bearing quartzite and quartz schist; thin, interbedded dark slate at top; conglomerate (Hellam Member) at base.
StatePennsylvania
NameChickies Formation
Geologic ageCambrian
Original map labelCch
Primary rock typequartzite
Secondary rock typeschist
Other rock typesslate; conglomerate
Lithologic constituents
Major
Metamorphic > Schistquartz schist
Metamorphic > Metasedimentary > Metaclastic > Quartzitelight-gray, hard, massive, Skolithos-bearing quartzite
Minor
Sedimentary > Clastic > Conglomerateconglomerate (Hellam Member) at base
Metamorphic > Metasedimentary > Metaclastic > Slatethin, interbedded dark slate at top
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 coverageAdams - Berks - Bucks - Chester - Delaware - Lancaster - Montgomery - Philadelphia - York

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