2- Mountain Building
The Bighorn Mountains
By studying the rocks in the highest parts of the mountains and the lowest parts of the Bighorn Basin to the west, we know the mountains have been uplifted more than 30,000 feet higher than the same level of rocks in the basin.
The Pryor Mountains
They have steep east facing fronts that have eroded back from the plane of the fault zone and gentle slopes off to the west controlled by the by the resistance to erosion of the Madison Limestone.
Did You Know?
The Crow Reservation was established by the Treaty of 1851. Today the reservation encompasses approximately 2.2 million acres, largest in the state of Montana. This is 2 1/2 times the acreage of the state of Rhode Island. More...