Northeastern Ohio – Northern Appalachians

#303, project 1, show in map.

Age (Ma)
320315
Paleozoic
Carboniferous
Pennsylvanian
Moscovian
Bashkirian
Pottsville Group
5.1 Ma
326
Paleozoic
Carboniferous
Mississippian
Serpukhovian
Maxville Limestone
22.4 Ma
375370365360355350
Paleozoic
Carboniferous
Mississippian
Tournaisian
Devonian
Late Devonian
Famennian
Frasnian
Logan Formation
Cuyahoga Formation
Sunbury Shale
Berea Sandstone
Bedford Shale
Cussewago Sandstone
Cleveland Shale Member of Ohio Shale
Chagrin Shale
Huron Shale Member
Olentangy Shale
6.5 Ma
390388
Paleozoic
Devonian
Middle Devonian
Givetian
Eifelian
Prout Limestone
Plum Brook Shale
Delaware Limestone
Columbus Limestone
1.4 Ma
395
Paleozoic
Devonian
Middle Devonian
Eifelian
Early Devonian
Emsian
Bois Blanc Formation
11.3 Ma
408.5
Paleozoic
Devonian
Early Devonian
Pragian
Oriskany Sandstone
8.4 Ma
440430420
Paleozoic
Devonian
Early Devonian
Lochkovian
Silurian
Pridoli
Ludlow
Ludfordian
Gorstian
Wenlock
Homerian
Sheinwoodian
Llandovery
Telychian
Aeronian
Rhuddanian
Helderberg Limestone
Bass Islands Group
Salina Group
Lockport Dolomite
Clinton Formation
Albion Group
5.0 Ma
460455450
Paleozoic
Ordovician
Late Ordovician
Katian
Sandbian
Middle Ordovician
Darriwilian
Queenston Shale
Undifferentiated
Trenton Limestone
Black River Group
Chazy Formation
11.8 Ma
500490480
Paleozoic
Ordovician
Early Ordovician
Floian
Tremadocian
Cambrian
Furongian
Stage 10
Jiangshanian
Paibian
Series 3
Guzhangian
Drumian
Knox Group
Kerbel Formation
Conasauga Formation
Rome Formation
Mt Simon Sandstone
499.0 Ma
1,3001,2501,2001,1501,1001,0501,000
Neoproterozoic
Tonian
Mesoproterozoic
Stenian
Ectasian
Basement