Sedimentary strata at Jacksonwald and Aspers

Arkosic sandstone; fossiliferous, gray to black shale and limestone; ripple-cross-laminated siltstone; and boulder conglomerate.
State Pennsylvania
Name Sedimentary strata at Jacksonwald and Aspers
Geologic age Jurassic
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone > Arkose
Sedimentary > Carbonate > Limestonefossiliferous, gray to black shale and limestone
Minor
Sedimentary > Clastic > Siltstoneripple-cross-laminated siltstone
Sedimentary > Clastic > Mudstone > Shale > Black-shalefossiliferous, gray to black shale and limestone
Sedimentary > Clastic > Conglomerateboulder conglomerate.
Sedimentary > Clastic > Mudstone > Shalefossiliferous, gray to black shale and limestone
Comments Not present in 1980 printed map, added to digital map.
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, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.

NGMDB product
Counties Adams - Berks