Lower members of Gatesburg Formation, undivided (PACAgl;15)

State	Pennsylvania
Name	Lower members of Gatesburg Formation, undivided
Geologic age	Cambrian
Original map label	Cgl
Primary rock type	dolostone (dolomite)
Secondary rock type	sandstone
Other rock types	limestone
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed)includes, in descending order: cyclic repetitions of sandstone and dolomite ("upper sandstone'' member); fossiliferous, laminated to massive limestone and dolomite (Ore Hill Member); cyclic repetitions of sandstone and dolomite (''lower sandstone" member); and thick-bedded crystalline dolomite (Stacy Member). Minor Sedimentary > Carbonate > Limestone (Bed)fossiliferous, laminated to massive limestone and dolomite (Ore Hill Member) Sedimentary > Clastic > Sandstone (Bed)cyclic repetitions of sandstone and dolomite ("upper sandstone'' member); cyclic repetitions of sandstone and dolomite (''lower sandstone" member)
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	Centre - Huntingdon