POTD August 13, 2013: Snow Canyon State Park, Washington County, Utah

Snow Canyon State Park, Washington County, Utah
Photographer: Lance Weaver

Red- and white-stained Navajo Sandstone in Snow Canyon State Park, Washington County.

POTD August 12, 2013: Grand Staircase–Escalante National Monument, Garfield County, Utah

Grand Staircase–Escalante National Monument, Garfield County, Utah
Photographer: Michael Vanden Berg

Sausageleaf talinum finds suitable habitat in sand and spherical concretions eroded from the lower part of the Jurassic-aged Navajo Sandstone. The concretions (about half an inch in diameter) formed when iron-oxide minerals precipitated out of ground water that flowed through the sandstone.

Special POTD submission! August 9, 2013: San Rafael Swell, Emery County, UT.

This photo was submitted to us by Mike McCandless of Emery County. The San Rafael Swell is an eroded anticline approximately 600,000 acres in size inside the Colorado Plateau contained entirely in Emery County. The Swell exposes many different types of colorful sedimentary rocks that have been eroded into beautiful valleys, canyons, gorges, mesas and buttes. Great photo Mike!

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POTD August 9, 2013: Wall Arch, Arches National Park, Grand County, Utah


Wall Arch, Arches National Park, Grand County, Utah

Photographers: Grant Willis (top)
and Rich Giraud (bottom)

Now you see it, now you don’t. Formerly located along the Devils Garden Trail in Arches National Park, Wall Arch collapsed sometime during the night of August 4th, 2008.

POTD August 8, 2013: Delicate Arch, Arches National Park, Grand County, Utah

Arches National Park, Grand County, Utah
Photographer: Michael Vanden Berg

A small window in the Slick Rock Member of the Entrada Sandstone frames a view of Utah’s most famous landform, Delicate Arch. The arch is composed of Jurassic-aged sandstone including the Slick Rock Member (base and  pedestals) and Moab Member of the Curtis Formation (bridge). In the distance, Oligocene-aged igneous rock forms the snow-covered La Sal Mountains.

POTD August 7, 2013: San Juan River near Mexican Hat, San Juan County, Utah

San Juan River near Mexican Hat, San Juan County, Utah
Photographer: Tyler Knudsen

Rock layers are folded in some areas of the Colorado Plateau, such as these on the flank of the Raplee anticline along the San Juan River near Mexican Hat, San Juan County.

POTD August 6, 2013: Island in the Sky District, Canyonlands National Park, San Juan County, Utah

Island in the Sky District, Canyonlands National Park, San Juan County, Utah
Photographer: Lance Weaver

Deep canyons display headward erosion at Island in the Sky District, Canyonlands National Park.

POTD August 5, 2013: Island in the Sky District, Canyonlands National Park, San Juan County, Utah

Island in the Sky District, Canyonlands National Park, San Juan County, Utah
Photographer: Taylor Boden

The La Sal Mountains laccolith (a shallow, mushroom-shaped igneous intrusion) of Oligocene age rises above the red Mesozoic and Paleozoic sedimentary rocks exposed in the Colorado River drainage. Washer Woman Arch, visible in the upper part of the small butte in the middle foreground, is eroded out of the Triassic-Jurassic-aged Wingate Sandstone.

Special POTD submission! August 2, 2013: Cascade Falls Trail

Special thanks to Burke McClure for the submission!

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POTD August 2, 2013: Wasatch Range, Morgan County, Utah

Wasatch Range, Morgan County, UtahPhotographer: Ashley H. Elliott

Glaciated peaks and cirques on the east side of the Wasatch Range