Pope Mega Group

Pope Mega Group
Stratigraphic range: Carboniferous
TypeGeological group
Sub-units
  • Grove Church Shale
  • Kincaid
    • Goreville Limestone
    • Cave Hill Shale
    • Negli Creek Limestone
  • Degonia Sandstone
  • Clore Limestone
    • Ford Station Limestone
    • Tygett Sandstone
    • Cora Limestone
  • Palestine Sandstone
  • Menard Limestone
    • Allard Limestone
    • Scottsburg Limestone
    • Walche Limestone
  • Waltersburg Formation
  • Vienna Limestone
  • Tar Springs Sandstone
  • Glen Dean Formation
  • Hardinsburg Formation
  • Haney Formation
  • Fraileys Formation
    • Big Clifty Member
  • Beech Creek Formation
  • Cypress Formation
  • Ridenhower Formation
    • Reelsville Member
    • Sample Member
    • Beaver Bend Member
  • Bethel Formation
  • Downeys Bluff Formation
  • Yankeetown Formation
  • Renault Formation
    • Shellersville Member
    • Levias Member
  • Aux Vases Formation
OverliesMammoth Cave Group
Lithology
PrimarySandstone, Limestone, Shale
Location
RegionIllinois Basin
CountryUnited States of America

The Pope Mega Group is a geologic unit found in the Illinois Basin of southern Illinois, southwestern Indiana, and western Kentucky.[1][2] In Indiana and Kentucky its equitant is the Buffalo Wallow Group. This unit grades from sandstones at its base into mix of limestones and sandstone and then a shale at its top.[3] In Southern Illinois oil wells are drilled into the Tar Springs formation.[4]

  1. ^ Stamm, N. 2020b, Geologic Unit: Menard, National Geologic Map Database, Geolex, United States Geological Survey, Reston, Virginia.
  2. ^ Willman, H.B., Atherton, Elwood, Buschbach, T.C., Collinson, Charles, Frye, J.C., Hopkins, M.E., Lineback, J.A., and Simon, J.A., 1975, Handbook of Illinois stratigraphy: Illinois Geological Survey Bulletin, no. 95, 261 p.
  3. ^ Kolata, D.R. 2005, Bedrock Geology of Illinois: Champaign, Ill. U.S. Geological Survey (Report). Retrieved 16 December 2023.
  4. ^ Askari, Zohreh; Lasemi, Yaghoob (16 December 2022). "Geological characterization and ROZ potential of the Tar Springs Sandstone". U.S. Department of Energy Office of Scientific and Technical Information.