Mississippian Marine Deposition
360 to 325 million years ago
The Ozark dome sank below sea level once again and limey muds again were deposited on top of the eroded Ordovician sediments. The Northview Shale and the Compton, Pierson and Burlington limestone areas, which occur along the very northern margin of the Bryant Watershed, are remnants of a once continuous layer across the Ozarks. The fossiliferous Mississippian limestones of the Springfield Plateau represent this time of tropical marine deposition.
The Appalachian Mountains continued to grow as the collision in the east continued.
The Ozark area was still in the tropics south of the