White Hills, Sevier County, Utah
Photographer: Rich Emerson; © 2012

Jurassic-age Arapien Shale in the White Hills, Sevier County.

Dixie National Forest, Garfield County, Utah
Photographer: Robert F. Biek; © 2012

Colorful volcanic sandstone and mudstone of the Brian Head Formation record initiation of volcanic activity in southwest Utah about 36 million years ago. Here, Eocene-age Brian Head deposits form rugged badlands at the south end of the Sevier Plateau.

Moab, Grand County, Utah
Photographer: Corey Unger
; © 2012

Wingate Sandstone cliffs at Kane Springs Canyon near Moab, Grand County.

Canyonlands National Park, San Juan and Wayne Counties, Utah
Photographer: Rich Emerson; © 2012

Uplift of the Colorado Plateau has caused the Green River to entrench its meandering path into the relatively soft rocks of the Permian-age Organ Rock Shale. At Soda Springs Basin, vertical cliffs of the more-resistant White Rim Sandstone cap the Organ Rock Shale 400 feet above the river.

Goblin Valley State Park, Emery County, Utah
Photographer: Stevie Emerson; © 2012

Sandstone hoodoos at Goblin Valley State Park, Emery County.

Here’s a rockin’ scenic view to jump start another weekend!

The Rimrocks, Grand Staircase–Escalante National Monument, Kane County, Utah
Photographer: Taylor Boden; © 2012

Spire-like formations called “toadstools” form where resistant sandstone boulders of Cretaceous-age Dakota Formation (toadstool caps) protect the underlying, softer, Jurassic-age Entrada Sandstone (toadstool stems) from erosion. Beneath their protective caps, the spires stand tall above the surrounding eroded landscape.

Henry Mountains, Garfield County, Utah
Photographer: Ken Krahulec; © 2012

Oligocene-age igneous intrusions exposed in the Henry Mountains, Garfield County.

The Cockscomb, Grand Staircase–Escalante National Monument, Kane County, Utah
Photographer: Stevie Emerson; © 2012

The Cockscomb formed along the steeply tilted sedimentary layers of a geologic feature known as the East Kaibab monocline. Faulting and erosion have shaped the tilted Jurassic and Cretaceous-age rocks into the spectacular “rooster’s comb” features seen today along Cottonwood Canyon Road.

Who’s ready to get back out into that beautiful Utah Spring scenery?

Scudder Lake, Uinta Mountains, Duchesne County, Utah
Photographer: Ken Krahulec; © 2012

Scudder Lake in the glaciated Uinta Mountains, Duchesne County.

Have a fun weekend, everyone!

Skyline Drive, Wasatch Plateau, Sanpete County, Utah
Photographer: Rich Emerson; © 2012

At 10,133 feet, winter clings to outcrops of the Tertiary-age Flagstaff Limestone near the crest of the Wasatch Plateau at Snow Lake. The steep, forested slope to the left (east) of the lake is a scarp associated with one of several faults forming a down-dropped crustal block called the Snow Lake graben.