View of Lake Powell's south shore from the Ferry route between Wahweap Marina (near Page, Arizona) and Rainbow Bridge National Monument in Utah. The top of the Navajo Sandstone is the white cliff along the shore. The slope forming, partially grass covered slope is the Carmel Formation. The massive sandstone cliff is Entrada Sandstone. The Entrada Sandstone is overlain by Morrison Formation (red and gray interbedded units above the massive sandstone cliff). Above the Morrison is the gray, thick-bedded, ledge-forming Romana Formation at the top of the butte. All these units are Jurassic in age. The top of the butte consist of Late Cretaceous sedimentary rocks including a ledge-forming Dakota Sandstone (Anderson and others, 2000; Doelling and Willis, 2006 and 2007).

Click here to see a stratigraphic section for Glen Canyon National Recreation Area.