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Hammer Creek Formation

Hammer Creek Formation - Gray and pale red, fine- to coarse-grained quartzose sandstone, siltstone, and mudstone.
StatePennsylvania
NameHammer Creek Formation
Geologic ageTriassic
Original map labelTrh
Primary rock typesandstone
Secondary rock typesiltstone
Other rock typesmudstone
Lithologic constituents
Major
Sedimentary > Clastic > SandstoneGray and pale red, fine- to coarse-grained quartzose sandstone, siltstone, and mudstone.
Minor
Sedimentary > Clastic > MudstoneGray and pale red, fine- to coarse-grained quartzose sandstone, siltstone, and mudstone.
Sedimentary > Clastic > SiltstoneGray and pale red, fine- to coarse-grained quartzose sandstone, siltstone, and mudstone.
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 coverageBerks - Chester - Dauphin - Lancaster - Lebanon

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