Jim Mountain
Located on the Northside of Wapiti Valley west of Cody, Wyoming, Jim Mountain is a stack of trachyandesite and andesite flows, flow breccias and minor tuff beds that are part of the Absaroka Volcanics Supergroup. This group of igneous rocks are the remnant of a volcanic field that was active in the Eocene between 53 and 43 million years ago. About 60% of the volcanic material, including the rocks pictured, were extruded between 50 and 47 million years ago, about a 3 million year period.
Jim Mountain
Located on the Northside of Wapiti Valley west of Cody, Wyoming, Jim Mountain is a stack of trachyandesite and andesite flows, flow breccias and minor tuff beds that are part of the Absaroka Volcanics Supergroup. This group of igneous rocks are the remnant of a volcanic field that was active in the Eocene between 53 and 43 million years ago. About 60% of the volcanic material, including the rocks pictured, were extruded between 50 and 47 million years ago, about a 3 million year period.