Huntley Mountain Formation (PAMDhm;13)

State	Pennsylvania
Name	Huntley Mountain Formation
Geologic age	Mississippian and Devonian
Original map label	MDhm
Primary rock type	sandstone
Secondary rock type	siltstone
Other rock types	shale
Lithologic constituents	Major Sedimentary > Clastic > Siltstone (Bed) Sedimentary > Clastic > Sandstone (Bed)Greenish-gray and light-olive-gray, flaggy, fine-grained sandstone Minor Sedimentary > Clastic > Mudstone > Shale (Bed)a few red shale interbeds
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]
Geographic coverage	Bradford - Cameron - Centre - Clearfield - Clinton - Columbia - Elk - Jefferson - Luzerne - Lycoming - McKean - Potter - Sullivan - Tioga - Wyoming