Key: Blue
- Mainly Marine Stratified Sequences
- P4 Oehoan Series (Permian)
- P3b Upper part of Guadalupian Series (Permian)
- P3a Lower part of Guadalupian Series (Permian)
- P3 Guadalupian Series (Permian)
- P2b Upper part of Leonardian Series (Permian)
- P2a Lower part of Leonardian Series (Permian)
- P1 Wolfcampian Series (Permian)
- P Permian
- M3 Chesterian Series (Mississippian)
- M2 Merantecian Series (Mississippian)
- M1 Osagean and Kinderkookian Series (Mississippian)
- M Mississippian
- D3 Upper Devonian
- D2 Middle Devonian
- D1 Lower Devonian
- D Devonian
- S3 Upper Silurian (Cayugan)
- S2 Middle Silurian (Niagaran)
- S1 Lower Silurian (Alexandrian)
- DS Devonian and Silurian
- S Silurian
- Continental Deposits
- P2ac Early Leonardian (Pennsylvanian)
- P1c Wolfcampian Series (Pennsylvanian)
- D3c Upper Devonian
- D2c Middle Devonian
- Eugeosynclinal Deposits
- TrPe Triassic to Permian
- Pe Permian
- uPze Upper Paleozoic
- De Devonian
- Se Silurian
- lPze Lower Paleozoic
- Volcanic Rocks
- DSv Devonian and Silurian volcanic rocks
- Sv Silurian volcanic rocks
- Intrusive Rocks
- Pzg2 Middle Paleozoic granitic rocks
- Pzmi Phanerozoic mafic intrusives