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POTD February 21, 2014: Ogden Canyon, Weber County, Utah

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.

POTD July 18, 2013: Wasatch-Cache National Forest, Weber County, Utah

Wasatch-Cache National Forest, Weber County, Utah
Photographer: Ken Krahulec

Prominent cliffs of gently dipping Mississippian-age Deseret (upper) and Gardison (lower) Limestone are exposed along the walls of Ogden Canyon. These strata are part of a thrust sheet emplaced during the Sevier orogeny, a regional mountain-building event that affected much of western Utah between about 140 and 50 million years ago.