Archive - Sheep Mountain Anticline

March 08, 2020


Each Sunday we present a notable item from our archives. This EPOD was originally published March 5, 2014.

Photographer: Ryan Miller
Summary Author: Ryan Miller

The Sheep Mountain anticline, in the Bighorn Basin of Wyoming, formed during the Laramide orogeny. Many of the ranges that form the Rocky Mountains also took shape at this time. Shown above is a railroad cut that runs through this northwest-southeast trending anticline. The limestone cliffs belong to the Madison Formation, deposited during the Mississippian sub-period of the Carboniferous Period. The stream at left is the Bighorn River. Photo taken on May 28, 2013.