Entries by Utah Geological Survey

Photo of the Day: January 14, 2020

Snow-capped hoodoos of the Eocene-age Pink Member of the Claron Formation glow in the evening sun. These hoodoos were sculpted by the effects of weathering and erosion from ice and rain. Learn more about how hoodoos are formed. Bryce Canyon National Park, Garfield County. Photo by Trevor Schlossnagle.        

Photo of the Day: January 6, 2020

The evening sun casts a long shadow of a basaltic knob at Pot Mountain. These early Pleistocene-age rocks are likely eroded volcanic necks that may have erupted into water. The vents are now eroded and partially concealed by shoreline gravel of the late Pleistocene Lake Bonneville, giving the mountain a teapot-like shape when viewed from […]

Photo of the Day (POTD): November 6, 2019

Fall colors and snow compliment brightly colored lichen on Miocene-age volcanic boulders on the shore of Johnson Valley Reservoir. Cloud shadows dapple the Fish Lake Hightop, one of several high plateaus in central Utah dominated by Tertiary-age volcanic rocks. Fishlake National Forest, Sevier County, Utah. Photo by J. Lucy Jordan.