|Name||Mississippian and Devonian Undifferentiated|
|Geologic age||Devonian and/or Mississippian|
Sedimentary > Clastic > Sandstone (Bed)Occurs only in Serpent Mound Impact Structure
Sedimentary > Clastic > Mudstone > Shale (Bed)Occurs only in Serpent Mound Impact Structure
Slucher, E.R., (principal compiler), Swinford, E.M., Larsen, G.E., and others, with GIS production and cartography by Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey Map BG-1, version 6.0, scale 1:500,000.
|Counties||Adams - Highland - Pike|