Little Cottonwood Canyon, Wasatch Range, Salt Lake County, Utah
Photographer: Mike Hylland; ©2011
The “”wrinkled” surface of a rock glacier on the floor of Maybird Gulch hints at the Ice Age glacial activity that carved this tributary to Little Cottonwood Canyon. Ice below the ground surface, now likely all melted away, once allowed the bouldery deposit to imperceptibly flow down the valley floor, forming the arcuate ridges at the ground surface.
The King Fisher Tower, Grand County, Utah
Photographer: Stefan Kirby; ©2011
The King Fisher Tower, north of Castle Valley in Grand County, consists of arkosic sandstone and mudstone of the Permian Cutler Formation.
Moki Dugway road, San Juan County, Utah
Photographer: Michael Vanden Berg; ©2011
Moki Dugway road ascends 1,100 feet in about three miles connecting the valley floor to Cedar Mesa, Utah Route 261 northwest of Mexican Hat, San Juan County.
Looking Glass Rock, San Juan County, Utah
Photographer: Taylor Boden; ©2011
The window of Looking Glass Rock eroded through the Jurassic-age Entrada Sandstone, northern San Juan County.
La Sal Mountains, Grand and San Juan Counties, Utah
Photographer: Mark Milligan; ©2011
Mount Tukuhnikivatz, a prominent peak in the La Sal Mountains, is an erosional remnant of magma that rose from depth (but never reached the surface) about 28 million years ago, forcing through and pushing up the area’s layered sedimentary rocks. View from the U.S. Forest Service Warner Lake guard station.
Wasatch Range, Utah County, Utah
Photographer: Adam McKean; © 2011
A colorful mosaic of fall colors on Provo Peak (11,068 feet), composed of Mississippian- and Pennsylvanian-age rock layers, Wasatch Range, Utah County.
Ogden Canyon, Weber County, Utah
Photographer: Ken Krahulec; ©2011
Large Z-shaped fold of Mississippian rock layers in upper Ogden Canyon, just below Pineview Reservoir, Weber County.
Ferron Mountain, Wasatch Plateau, Sanpete County, Utah
Photographer: Greg McDonald; ©2011
Fall colors at the base of striped layers of the Tertiary-age Flagstaff Limestone, southeastern end of Ferron Mountain, Wasatch Plateau, Sanpete County.
Mount Timpanogos, Wasatch Range, Utah County, Utah
Photographer: Grant Willis; ©2011
White traces of early snow dust prominent sandstone and limestone rock layers on Mount Timpanogos and contrast with lower-elevation yellow-tinted aspen trees. The sedimentary rocks are the Pennsylvanian-age Bear Canyon Member of the Oquirrh Formation that have been transported eastward over 30 miles on thrust faults.
Hope you all enjoy the President’s Day holiday! Here’s your photo for the day.
Wellsville Mountains near Honeyville, Utah
Photographer: Chris DuRoss; © 2011
Limestone clasts deposited by a debris flow (fast-moving mixture of sediment and water) at the base of the Wellsville Mountains near Honeyville. Debris flows form as saturated hillslope sediments move or are eroded, and commonly occur in areas burned by wildfires.
The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.
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