Geologic History

Tower Rock stands amid tall cliffs lining both sides of the canyon. These sandstone rocks were once ancient sand dunes. Photo by Douglas A. Sprinkel, Utah Geological Survey.

Utah, A Geologic History!

An in-depth look at Utah’s changing climate and environment 540 million years ago to present! Includes conceptual images of past environments and a break-down of events in Utah’s geologic history.