• Source: Council Grove Group

The Council Grove Group is a geologic group in Kansas, Oklahoma, and Nebraska as well as subsurface Colorado. It preserves fossils dating to the Carboniferous-Permian boundary. This group forms the foundations and lower ranges of the Flint Hills of Kansas, underlying the Chase Group that forms the highest ridges of the Flint Hills.
The Group particularly consists of megacyclothems alternating between massive mudstone paleosols and massive shallow marine limestone. The sequences of these alternations correlate with the ~400,000 year component of Milankovitch cycles. A number of the limestones have minor flint-filled marine animal burrows, anticipating the massive flint beds of the Chase Group.
With the exposure of the group's lower formations in the 1993 flooding, the entirety of the Council Grove Group, from hillcrest Speiser Shale down to pond-level Americus limestone, is exposed for study from top to bottom in the Tuttle Creek Lake Spillway.




See also



List of fossiliferous stratigraphic units in Kansas
List of fossiliferous stratigraphic units in Nebraska
List of fossiliferous stratigraphic units in Oklahoma
Paleontology in Kansas
Paleontology in Nebraska
Paleontology in Oklahoma




References






Further reading


Melville R. Mudge and Ellis L. Yochelson (1962). "Stratigraphy and Paleontology of the Uppermost Pennsylvanian and Lowermost Permian Rocks in Kansas" (PDF) (323). USGS Professional Paper. Retrieved 2021-11-27. {{cite journal}}: Cite journal requires |journal= (help)
This report encyclopedically covers the units exposed in the Tuttle Creek Lake Project area, predominantly the lower Permian.

Kata Kunci Pencarian:

• Stadion Emirates
• X (media sosial)
• Perang Dunia II
• Kota Westminster
• Kensington dan Chelsea (borough kerajaan)
• Daftar kota kembar di Inggris
• Protestanisme
• Kekristenan
• Argentina
• Trilateral Commission
• Council Grove Group
• Grove
• Admire Group
• Ladbroke Grove
• Elk Grove, California
• Garden Grove, California
• Americus Limestone
• Lemon Grove, California
• Pacific Grove, California
• Penns Grove, New Jersey