|Name||Heidlersburg Member of Gettysburg Formation|
Sedimentary > Clastic > Mudstone > Shale (Bed)Red, green, and gray shale and argillite
Sedimentary > Clastic > Sandstone > Arkose (Bed)minor thin beds of gray arkosic sandstone
Sedimentary > Clastic > Conglomerate (Bed)some quartz conglomerate and limestone conglomerate.
Metamorphic > Metasedimentary > Metaclastic > ArgilliteRed, green, and gray shale and argillite
Sedimentary > Carbonate > Limestone (Bed)some quartz conglomerate and limestone conglomerate.
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, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.
|Counties||Adams - York|