Paleozoic Formations in Southern Arizona

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Southern Arizona			Northern Arizona
Formation Name	Map Symbol	Age	Formation Name	Map Symbol	Age
Rain Valley	Pr	Late Permian	Kaibab Limestone	P	Late Permian
Concha Limestone	Pcn	Permian
Scherrer Formation	Ps	Permian
Epitaph Dolomite	Pe	Permian
Colina	Pc	Permian
Earp		Pennsylvanian/Permian	Supai Formation		Pennsylvanian/Permian
Black Prince		Pennsylvanian
Horquilla Limestone		Pennsylvanian	Naco Limestone		Pennsylvanian
Escabrosa Limestone	Me	Missisppian	Redwall Limestone	Mrw	Missisppian
Martin Limestone	Dm	Devonian
Abrigo Limestone		Mid to Late Cambrian
			Muav Limestone		Mid to Late Cambrian
			Bright Angle Shale		Mid to Late Cambrian
Bolsa Quartzite		Mid Cambrian	Tapeats Sandstone		Early to Mid Cambrian
Fossils from gravels and other unknown Paleozoic formations
Sources: Stratigraphic Section Near Bisbee Arizona The Southern Arizona Guidebook III available from the Arizona Geological Survey