Entries by Utah Geological Survey

POTD October 18, 2013: Bryce Canyon National Park, Garfield County, Utah

Bryce Canyon National Park, Garfield County, Utah Photographer: Tyler Knudsen Water plunges over a dolomite ledge within the otherwise easily erodible limestone of the Eocene-age Claron Formation in Water Canyon. A canal (the “Tropic Ditch”) diverts water from the East Fork of the Sevier River seven miles across the Paunsaugunt Plateau divide to the head […]

POTD October 14, 2013: St. George basin, Washington County, Utah

St. George basin, Washington County, Utah Photographer: Robert F. Biek Ruins of the Harrisburg town site, established by Mormon pioneers in 1861, consist of blocks of Early Jurassic-age Springdale Sandstone, which a mile to the north is the main ore-bearing horizon of the Silver Reef mining district. The mining district is famous among geologists for […]

POTD October 8, 2013: Wasatch Range, Salt Lake County, Utah

Wasatch Range, Salt Lake County, Utah. Photographer: Stefan Kirby A winter storm clears from Superior Peak (11,132 feet) in upper Little Cottonwood Canyon southeast of Salt Lake City. Beneath its thick blanket of snow, Superior Peak is made up of tilted Precambrian-age sedimentary rocks, including the Big Cottonwood Formation and overlying Mineral Fork Tillite.