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.