Sedimentary > Carbonate > Dolostone (Bed)medium- to dark-gray, crystalline dolomite, light-olive-gray in places, weathering to light gray and yellowish brown; massive bedded; oolitic; dolomitic shale interbeds
Sedimentary > Clastic > Mudstone > Shale (Bed)thin shale and dolomitic shale interbeds; upper part is very shaly.
Unconsolidated > Coarse-detrital > Sand (Bed)scattered sand grains
Sedimentary > Chemical > Chert (Bed)pink to gray, mottled chert and dark-gray chert
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 - Lebanon - Lehigh - Northampton|