In ascending order, the Crashsite Group is subdivided into the Howard Nunataks Formation (1,630 meters (5,350 ft)), the Mount Liptak Formation (1,070 meters (3,510 ft)), and the Mount Wyatt Earp Formation (300 meters (980 ft)). Erosion-resistant and steeply inclined beds of the Mount Wyatt Earp Formation comprise the crest of the Vinson Massif, including Mount Vinson. The steeply inclined strata of the Crashsite Group are part of the western limb of a major syncline that forms the core of the Sentinel Range within the Ellsworth Mountains.