Rock Arches, Geology and the Wonders of Abduction

During the Pennsylvanian period (300 to 320 million years ago), this area was part of the Paradox Basin, a giant inland sea that dried up intermittently, leaving behind a thick accumulation (5000 feet, 1525 meters) of layered marine salt. Loading by deposition of subsequent Permian through Triassic layers caused the ductile salt to flow toContinue reading “Rock Arches, Geology and the Wonders of Abduction”