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POTD June 20, 2017: Fremont petroglyphs.

Fremont petroglyphs
Photographer: Charles Bishop © 2017
At the mouth of Cottonwood Canyon, Fremont petroglyphs in the Northern San Rafael Style depict a hunting scene. The figures are etched into sandstone of the Green River Formation, and derive their contrast from the dark, weathered patina developed on the light-colored rock.

POTD June 06, 2017: Gandy Salt Marsh, Millard County

Gandy Salt Marsh, Millard County
Photographer: Rich Emerson © 2017
With the Deep Creek Mountains on the horizon, lush vegetation thrives in spring-fed wetlands that create an oasis in the middle of arid Snake Valley. Hundreds of springs and seeps in the valley provide habitat for many unique species of plants and animals.

POTD May 30, 2017: Caineville Badlands, Wayne County

Caineville Badlands, Wayne County
Photographer: Gregg Beukelman © 2017
The view from North Caineville Mesa reveals convoluted patterns eroded into the Blue Gate Member of the Cretaceous-age Mancos Shale. The reddish deposits are remnants of a landslide sourced from the Emery Sandstone Member of the Mancos Shale.

POTD May 25, 2017: Bryce Canyon National Park

Bryce Canyon National Park
Photographer: Grant Willis © 2017
Bryce Canyon National Park is actually a plateau-edge escarpment carved into the Claron Formation, estimated to be eroding back at the phenomenal rate of as much as 4 feet per century. The orange colors are due to varying amounts of iron oxide minerals that stain calcareous (limey) ancient soil, lake, marsh, and floodplain deposits of the Claron Formation.

POTD May 16, 2017: Little Cottonwood Canyon, Wasatch Range

Little Cottonwood Canyon, Wasatch Range
Photographer: Michael Vanden Berg © 2017
Alpine wildflowers color the slopes of Albion Basin at the head of Little Cottonwood Canyon. The 11,000-foot-high peaks of the central Wasatch Range owe their height to vertical movement on the Wasatch fault over the past 15 million years.

 

POTD April 25, 2017: Yellowstone Basin

Yellowstone Basin, Uinta Mountains, Duchesne County

Photographer: Rich Emerson © 2017

 

POTD April 18, 2017: Tower of Babel, Arches National Park, Grand County

Tower of Babel, Arches National Park, Grand County

Photographer: Kent Brown © 2017

POTD April 04, 2017: Modern dunes, Arches National Park

Modern dunes, Arches National Park
Photographer: Kent Brown © 2017

Modern dunes (foreground) consist of sand weathered from bedrock such as the Wingate Sandstone (skyline), which similarly formed from sand deposited in dunes 200 million years ago.