Earth Geology Geologic Time Scale Permian Uplift and Erosion

Permian Uplift and Erosion

286 to 245 million years ago

Uplift and erosion continued throughout the Permian Period. No Permian rocks are found in the Ozarks area. Erosion began stripping away the Mississippian and Pennsylvanian sediments across the Ozark Dome.

The collision continued to the south between the South American and North American plates. The Ouachita Mountains continued to grow.

The Ozarks area was still in the tropics essentially on the equator.

At the end of the Permian, also the end of the Paleozoic Era, a global mass extinction occurred. Some ninety percent of all known animal species were wiped out.