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.

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