Table 1a. Generalized of Appalachian basin Total Petroleum Systems (adapted from de Witt and Milici, 1991, fig. 2).

TOTAL STRATIGRAPHIC ASSESSMENT RESERVOIR SOURCE PETROLEUM UNIT UNIT TYPE ERA SYSTEM PERIOD

Dunkard Group ian Perm- Coal Monongahela Continuous Coal Group Black shale Conemaugh Coal Coal

ANIAN Continuous

V Group sandstone Black shale Carboniferous Coal- Gas LITHOLOGY OF Allegheny Coal Coal Continuous Group sandstone Black shale SOURCE ROCK

PENNSYL Pottsville Coal Coal OR RESERVOIR Continuous Group sandstone Black shale Mauch Chunk / Ravencliff sand Pennington Conventional Coal, black shale, Formations Maxon sand Greenbrier Loyalhanna sand and sandstone Conventional Big lime Pocono Big Injun, Squaw, Conventional Formation Weir sands C

I Black shale and coal MISSISSIPPIAN Berea / Murrysville Berea sand Sunbury

Continuous Murrysville sand Shale

Catskill, Brallier Fms.,

Venango, Bradford, Sandstone Cleveland, Elk sands; Continuous Upper Devonian Ohio, Huron,

O black shales

black shale

Rhinestreet Shales

Limestone Continuous Harrell Formation Black shale Burket Member

Hamilton Group Black shale Continuous Marcellus Shale Z

Onondaga Group

DEVONIAN Huntersville Chert

Conventional Dolomite Huntersville Chert "Corniferous" lime

Oriskany Ss. Oriskany sands Conventional

Helderberg Group O

Bass Islands

Dolomite

Salina Group Regional seal

Lockport Dolomite "Corniferous" lime Clinton Group Keefer or Big Six Continuous SILURIAN sand Medina Tuscarora/Clinch Ss. Continuous Group Clinton/Medina sand

E Juniata/Bald Bald Eagle sand Eagle Fms. Reedsville Shale

Utica Shale Utica Shale Continuous Utica Shale Devonian Shale-Middle and Upper Paleozoic L A Trenton Trenton Limestone Trenton Limestone Conventional Limestone

ORDOVICIAN Black Black River Ls., Conventional Sevier/ Limestone Wells Creek fm. Blockhouse Sh. Utica-Lower Paleozoic

P Beekmantown Group Upper Knox Dol. Conventional

Chepultepec and Rose Run sand, Conventional Copper Ridge Dols. Lower Knox, Dol. Conasauga Conasauga Formation / Group Formation Rome Formation Rome Formation Mt. Simon Basal Clastics Sandstone Conasauga-Rome/Conasauga CAMBRIAN