The Billboard
Encyclopedia
The Billboard is a massive granite monolith in the Sarnoff Mountains of the Ford Ranges
of Marie Byrd Land
, West Antarctica
, standing just west of Mount Rea between Arthur Glacier and Boyd Glacier. It was discovered in November 1934 by a Second Byrd Antarctic Expedition (1933–35) sledge party under Paul Siple, and is so named because of its form and appearance with vertical faces rising above the continental ice. It is topped by an erosion surface that reaches an elevation of 793 m, which is ~700 m above the outlet glacier below. The surface lacks glacial erosion features such as striae and whaleback forms; however erratics found on the surface provide evidence of overriding by cold-based glacier ice. Features characteristic of prolonged surface weathering in a sub aerial environment are sheeting and weathering pits.
The summit was first visited by helicopter in January 1993 during expedition GANOVEX VII. In 1998-99 a geological party from Colorado College
reached the summit by climbing a west route.
Ford Ranges
The Ford Ranges is a grouping of mountain ranges standing east of Sulzberger Ice Shelf and Block Bay in the northwest part of Marie Byrd Land, Antarctica...
of Marie Byrd Land
Marie Byrd Land
Marie Byrd Land is the portion of West Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W...
, West Antarctica
West Antarctica
West Antarctica, or Lesser Antarctica, one of the two major regions of Antarctica, is the part of the continent that lies within the Western Hemisphere including the Antarctic Peninsula.-Location and description:...
, standing just west of Mount Rea between Arthur Glacier and Boyd Glacier. It was discovered in November 1934 by a Second Byrd Antarctic Expedition (1933–35) sledge party under Paul Siple, and is so named because of its form and appearance with vertical faces rising above the continental ice. It is topped by an erosion surface that reaches an elevation of 793 m, which is ~700 m above the outlet glacier below. The surface lacks glacial erosion features such as striae and whaleback forms; however erratics found on the surface provide evidence of overriding by cold-based glacier ice. Features characteristic of prolonged surface weathering in a sub aerial environment are sheeting and weathering pits.
The summit was first visited by helicopter in January 1993 during expedition GANOVEX VII. In 1998-99 a geological party from Colorado College
Colorado College
The Colorado College is a private liberal arts college in Colorado Springs, Colorado, United States, in the foothills of the Rocky Mountains. It was founded in 1874 by Thomas Nelson Haskell...
reached the summit by climbing a west route.