Cutler group, Capitol Reef
The Cutler Group dates back to the early Permian Period (250 - 29 MA). During early Permian time, Utah was on a continental shelf that was occasionally covered by shallow waters from the Panthalassa Ocean. This part of Laurasia (the northern continent formed when Panagea broke apart) was a continental margin. The Cutler Group consists of the Elephant Canyon Formation, Organ Rock Shale, and White Rim Sandstone. At Capitol Reef National Park, erosion has exposed the uppermost layers at the bottom of the gorge at the Goosenecks Overlook (White Rim sandstone, and Cedar Mesa Sandstone). These two formations are often treated as one stratigraphic unit.
The picture at top left shows the Cutler Formation at the bottom of Sulphur Creek as seen from Gooseneck Overlook at Capitol Reef National Park, UT. The Cutler Formation is shown on the right side of the picture more specifically the lighter rock(gray colored).
The Cedar Mesa Sandstone consists of a light gray color to a yellow-gray color and contains a coarse grained cross bedded and flat bedded quartzose sandstone.
The White Rim Sandstone is located mostly west of the Colorado river. It forms an easily identifiable white formation around the top of some canyons around the Cutler Formation. It normally consists of Gray to white cliff forming fine to coarse grained sandstone.