Horseshoe Canyon Wilderness Study Area, Emery County, Utah
Photographer: Sonja Heuscher

Stream erosion during uplift of the Colorado Plateau incised the Green River channel deep into the Triassic–Jurassic-age Wingate Sandstone and underlying Chinle Formation. At Bowknot Bend, the channel turns back on itself in a huge meander loop.

Coral Pink Sand Dunes State Park, Kane County, Utah.
Photographer: Michael Vanden Berg

Large star dune in Coral Pink Sand Dunes State
Park, Kane County, Utah.

Coral Pink Sand Dunes State Park, Kane County, Utah.
Photographer: Michael Vanden Berg

Beetle on rippled dune face, Coral Pink Sand Dunes State Park, Kane County, Utah.

Desolation Canyon, Emery County, Utah
Photographer: Tyler Knudsen

Rippled sand bar along the Green River in Desolation Canyon, Emery County, Utah

Snow Canyon State Park, Washington County, Utah
Photographer: Michael Vanden Berg

Eroded cross-beds in the Navajo Sandstone capture spherical hematite (iron oxide) concretions that have weathered out of  overlying strata. The Navajo Sandstone comprises “fossilized” sand dune deposits of Early Jurassic age.

Grand Staircase–Escalante National Monument, Kane County, Utah.
Photographer: Tyler Knudsen

Iron oxide-stained sandstone at “Yellow Rock,” Grand Staircase–Escalante National Monument, Kane County, Utah.

Iron County, Utah
Photographer: Tyler Knudsen

Finely laminated sandstone of the Chinle Formation, Iron County, Utah.

Grand Staircase–Escalante National Monument, Kane County, Utah
Photographer: Tyler Knudsen

Dinosaur skin is preserved at many Utah dinosaur sites. Fossilized dinosaur skin impressions, Grand Staircase–Escalante National Monument, Kane County, Utah.

High Uintas Wilderness, Summit County, Utah
Photographer: Rich Emerson

On the north slope of the Uinta Mountains,  Henrys Fork Lake is a paternoster lake—one of a chain or series of lakes in a glacially eroded valley. Most of the glaciers had retreated by 14,000 years ago, leaving behind moraines, U-shaped valleys, and cirques carved into Precambrian-age Uinta Mountain Group rocks.

 

Lone Peak, Salt Lake and Utah Counties, Utah
Photographer: J. Lucy Jordan

Differential weathering creates unusual patterns on the Little Cottonwood quartz monzonite, Lone Peak, Salt Lake and Utah Counties.