Telephoto view down Park Avenue Canyon.
Zoomed-in view down Park Avenue Canyon in the Courthouse Towers area showing massive cliffs of the Slick Rock Sandstone Member of the Entrada Sandstone. In Arches National Park, Slick Rock Sandstone Member rests conformably on the underlying layered mudrocks and sandstone of the Dewey Bridge Member of the Carmel Formation (see Doelling, 2000; note that in older publications include both the Slick Rock Sandstone Member and the Dewey Bridge Member were included within the Entrada Sandstone).
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Last modified: 7/22/2010