Mauch Chunk Formation (PAMmc;7)

Mauch Chunk Formation

Grayish-red shale, siltstone, sandstone, and some conglomerate; some local nonred zones. Includes Loyalhanna Member (crossbedded, sandy limestone) at base in south-central and southwestern Pennsylvania; also includes Greenbrier Limestone Member, and Wymps Gap and Deer Valley Limestones, which are tongues of the Greenbrier. Along Allegheny Front from Blair County to Sullivan County, Loyalhanna Member is greenish-gray, calcareous, crossbedded sandstone.

State	Pennsylvania
Name	Mauch Chunk Formation
Geologic age	Mississippian
Lithologic constituents	Major Sedimentary > Clastic > Siltstone Sedimentary > Clastic > Mudstone > Shale Sedimentary > Clastic > Sandstonesandstone; along Allegheny Front from Blair County to Sullivan County, Loyalhanna Member is greenish-gray, calcareous, crossbedded sandstone. Minor Sedimentary > Carbonate > LimestoneIncludes Loyalhanna Member (crossbedded, sandy limestone) at base in south-central and southwestern Pennsylvania; also includes Greenbrier Limestone Member, and Wymps Gap and Deer Valley Limestones, which are tongues of the Greenbrier. Sedimentary > Clastic > Conglomerate
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	NGMDB product page for 34341
Counties	Bedford - Blair - Cambria - Carbon - Centre - Clearfield - Clinton - Columbia - Dauphin - Fayette - Fulton - Huntingdon - Indiana - Lackawanna - Lebanon - Luzerne - Lycoming - Northumberland - Perry - Schuylkill - Somerset - Sullivan - Westmoreland - Wyoming

Mauch Chunk Formation

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.