Organ Rock Formation Organ Rock Formation The Organ Rock Formation or Organ Rock Shale is a formation within the late Pennsylvanian to early Permian Cutler Group and is deposited across southeastern Utah, northwestern New Mexico, and northeastern Arizona. This formation notably outcrops around Canyonlands National Park, Natural Bridges National Monument, and Monument Valley. The age of the Organ Rock is constrained to the latter half of the Cisuralian Epoch by age dates from overlying and underlying formations. Important early terrestrial vertebrate fossils have been recovered from this formation in northern Arizona, southern Utah, and northern New Mexico. These include the iconic Permian terrestrial
Waitabit Cliffs Waitabit Cliffs Waitabit Cliffs () is a line of sedimentary cliffs on the east coast of Alexander Island, Antarctica, which faces east onto George VI Sound and extends 3 nautical miles (6 km) north from the mouth of Mercury Glacier. The cliffs were probably first sighted by Lincoln Ellsworth, who flew directly over it and photographed segments of this coast on November 23, 1935. First roughly surveyed in 1936 by the British Graham Land Expedition. Resurveyed in 1949 by the Falkland Islands Dependencies Survey, at which time the rock strata were independently examined by members of the party at two