Saturday, March 29, 2014

Uinta Mountains, South Flank Photos

Ashley Gorge on the south flank of the Uinta Mountains.

Site of a recent landslide on the south flank of the Uinta Mountains. The sediments that were activated in the landslide were deposited by glaciers that scoured these mountains during the last ice age.

View of Whiterocks River valley from Ice Cave Peak on the south flank of the Uinta Mountains. Precambrian through Mesozoic rocks dip here to the south off of the Uinta anticlinorium.

Red colored rocks grading up into gray are the Pennsylvanian Morgan Formation.

View from Ice Cave Peak across Whiterocks River valley. The tan beds capping the ridge above the cliffs is the Mississippian Humbug Formation. The cliffs are composed of the Deseret Limestone and Madison Limestone formations, both Mississippian in age. These Mississippian formations were deposited unconformably on the Proterozoic (Precambrian) Red Pine Shale that has been dated at about 770 million years old. You can read more about this area and other areas of Utah in the "Geologic History of Utah."

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