Pennsylvanian coal seams

• Pennsylvanian coal seams

  • Herrin
  • Springfield
  • Danville

• Mississippian Oil Reservoirs

  • Chesterian Sandstones
  • Valmeyeran Carbonates

• Silurian/Devonian

  • Hunton Megagroup

• Ordovician

  • Trenton Oil Reservoirs
  • St Peter Gas Storage

• Cambrian

  • Mt Simon Gas Storage

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