Sedimentary > Clastic > Sandstone (Bed)feldspathic sandstone; color ranges from nearly white to dark gray; massive bedded; Skolithos present in upper part
Metamorphic > Metasedimentary > Metaclastic > Quartzitetypically light-gray, fine- to medium-grained quartzite
Sedimentary > Clastic > Conglomerate (Bed)quartz-pebble conglomerate occurs at base
|Comments||On the paper map, in the map description for this unit, Scolithus is spelled Skolithus.|
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||Berks - Bucks - Lancaster - Lebanon - Lehigh - Northampton|