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
Primary rock type	shale
Secondary rock type	siltstone
Other rock types	sandstone; conglomerate; limestone
Lithologic constituents	Minor Sedimentary > Clastic > Conglomerate 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.
Map references	Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip [http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]
Unit 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, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip [http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]
Counties	Bedford - Blair - Cambria - Carbon - Centre - Clearfield - Clinton - Columbia - Fayette - Fulton - Huntingdon - Indiana - Lackawanna - Lebanon - Luzerne - Lycoming - Northumberland - Schuylkill - Somerset - Sullivan - Westmoreland - Wyoming

State

Pennsylvania

Name

Mauch Chunk Formation

Geologic age

Mississippian

Primary rock type

shale

Secondary rock type

siltstone

Other rock types

sandstone; conglomerate; limestone

Lithologic constituents

Minor

Sedimentary > Clastic > Conglomerate

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.

Map references

Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map. Retrieved from internet 9-30-2004; <http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx> DL Data: pageoexp.zip

[http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]

Unit 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.

[http://www.dcnr.state.pa.us/topogeo/map1/bedmap.aspx]

Counties

Bedford - Blair - Cambria - Carbon - Centre - Clearfield - Clinton - Columbia - Fayette - Fulton - Huntingdon - Indiana - Lackawanna - Lebanon - Luzerne - Lycoming - Northumberland - Schuylkill - Somerset - Sullivan - Westmoreland - Wyoming