Kinkaid Formation Also known at the
Kinkaid Limestone, this unit is made up of several smaller members. This unit ranges from 0' - 230 ' thick. The Grove Church Shale is at the top, followed by Members, Goreville Limestone, Cave Hill Shale, and Negli Creek Limestone.
Tobinsport Formation A formation in Illinois containing 4 members that are linked to other formations in the Upper Pope Group. The Negli Creek Limestone of the Kinkaid formation to the west. Mt. Pleasant Sandstone, Bristow Sandstone, and Siberia Limestone. The Siberia is a thin tongue of the Menard formation.
Degonia Formation This sandstone unit is 0-150' thick.
Clore Formation This unit is 0-150’ thick. Its units include the Ford Station Limestone, Tygett Sandstone and Cora Limestone Members.
Palestine Formation This sandstone unit is 0-120' thick.
Menard Formation The
Menard Limestone is a
geologic formation in the
Illinois Basin of southern
Illinois, southwestern
Indiana, and western
Kentucky. The type section of both the Walche Limestone Member and the Scottsburg Limestone Member are exposures in Walche's Cut, a railway cutting on the
Illinois Central Railroad.
Waltersburg Formation This formation is 0-100’ thick.
Vienna Formation This limestone unit is 0-60' thick
Tar Springs Formation This sandstone unit is 0-150' thick. The Tar Springs consists of interbedded sandstone and shale, creating closed reservoirs within the sand. For this reason it is the largest oil producing formation in Illinois. Estimated to have accounted for more than 60% of the oil production in the state.
Glen Dean Formation The
Glen Dean Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period.
Hardinsburg Formation The
Hardinsburg Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period.
Haney Formation The
Haney Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period.
Fraileys Formation The
Fraileys Formation or
Fraileys Shale is a
geologic formation in
Illinois. It preserves
fossils dating back to the
Carboniferous period.
Beech Creek Formation The
Beech Creek Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period.
Cypress Formation The
Cypress Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period.
Ridenhower Formation The
Ridenhower Formation is a
geologic formation in
Illinois. It preserves
fossils dating back to the
Carboniferous period. It includes the Reelsville Member, Sample Member and Beaver Bend Member.
Bethel Formation The
Bethel Formation is a
geologic formation in
Illinois, Indiana and
Kentucky. It preserves
fossils dating back to the
Carboniferous period. == Energy Production ==