some mountain ranges. Beneath Toney Mountain, the basaltic floor rises from an elevation of beneath sea level, and the volcano is situated on the floor of a graben. The region is further characterized by a large dome-like uplift, part of the West Antarctic Rift System, and it may reflect the presence of a stationary hotspot. Toney Mountain was probably among those viewed from a distance by Admiral Byrd and others of the USAS in plane flights from the ship Bear in February 1940. It was mapped in December 1957 by the oversnow traverse party from Byrd Station to the Sentinel Range, 1957–58, led by C.R. Bentley who proposed the name. Named after George R. Toney, scientific leader at Byrd Station in 1957, a participant in several Antarctic and Arctic operations, serving in both field and administrative capacities. See also List of volcanoes in Antarctica List of Ultras of Antarctica Williamson Ridge References External links "Mount Toney, Antarctica" on Peakbagger Polygenetic shield volcanoes Calderas of Antarctica Volcanoes of Marie Byrd Land Pleistocene shield volcanoes