Entries by Utah Geological Survey

POTD June 28, 2013: Fishlake National Forest, Piute County, Utah.

Fishlake National Forest, Piute County, Utah Photographer: Tyler Knudsen Storm clouds gather over Mount Belknap (12,137 feet) in the Tushar Mountains, Utah’s third-highest range. The smooth, rounded slopes of this summit ridge are composed of easily eroded volcanic ash and lava flows. The mountains are part of the eruptive center of the Marysvale volcanic field, […]

POTD June 26, 2013: San Rafael Swell, Sevier County, Utah

San Rafael Swell, Sevier County Photographer: Robert F. Biek Alluvial and wind-blown sediment partly conceals the Jurassic-age Entrada Sandstone in the Last Chance Desert, which occupies the axis of the Last Chance anticline. The narrow, jagged, black ridge at the center of the photo is a basaltic dike of probable late Tertiary age (3 to […]

Chasing After Allosaurus

nationalgeographic.com                     A little more than a year ago, in the corner of a Salt Lake City tattoo parlor spattered with sci-fi ephemera and fantasy art, I watched as artist Jon McAffee inked an Allosaurus onto my arm. The bloody art was a celebration of a dream […]

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Massive rockslide closes part of Dinosaur National Monument

fox13now.com A massive rockslide closed part of Dinosaur National Monument. The National Park Service says the slide is still active and rocks have been falling since Tuesday. NPS says that on Tuesday, fishermen reported large boulders falling in the area. Park rangers investigated, but found no further activity. READ MORE OTHER LINKS sltrib.com deseretnews.com MORE […]

POTD June 24, 2013: Arches National Park, Grand County, Utah

Arches National Park, Grand County Photographer: William Lund Delicate Arch is formed of Jurassic-age sandstone—the Slick Rock Member of the Entrada Sandstone (base and pedestals) and Moab Member of the Curtis Formation (bridge). With a horizontal span of 32 feet and a vertical span of 46 feet, Delicate Arch is small compared to many other […]