Thumb Promontory

Last updated

Thumb Promontory ( 84°48′S116°18′W / 84.800°S 116.300°W / -84.800; -116.300 Coordinates: 84°48′S116°18′W / 84.800°S 116.300°W / -84.800; -116.300 ) is a prominent rock spur on the north side of Lackey Ridge, Ohio Range. Thumb Promontory was unofficially named by a New Zealand Antarctic Research Program (NZARP) field party to the Ohio Range, 1979–80. The name was formally proposed by geologist Margaret Bradshaw, member of a second NZARP field party, 1983–84. So named because of the similarity of the upper part of this feature to an upturned thumb from certain angles.

PD-icon.svg This article incorporates  public domain material from the United States Geological Survey document: "Thumb Promontory".(content from the Geographic Names Information System )  OOjs UI icon edit-ltr-progressive.svg


Related Research Articles

Wisconsin Range

The Wisconsin Range is a major mountain range of the Horlick Mountains in Antarctica, comprising the Wisconsin Plateau and numerous glaciers, ridges and peaks bounded by the Reedy Glacier, Shimizu Ice Stream, Horlick Ice Stream and the interior ice plateau.

Ohio Range

The Ohio Range is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf.

Sharpend Glacier is an alpine glacier, 1.5 miles (2.4 km) long, which flows into Alatna Valley from the south end of Staten Island Heights, in the Convoy Range, Victoria Land. Descriptively named from the pointed terminus of this glacier by a New Zealand Antarctic Research Program (NZARP) field party to the area, 1989–90.

First principal meridian survey line

The first principal meridian is a meridian that began at the junction of the Ohio River and Great Miami River. It extends north on the boundary line between the states of Ohio and Indiana, and roughly approximates to the meridian of longitude 84° 48′ 50″ west from Greenwich. The ranges of the public surveys in the state of Ohio, west of the Scioto River, are numbered from this meridian.

Atkinson Glacier glacier in Antarctica

Atkinson Glacier is a glacier between Findlay Range and Lyttelton Range, Admiralty Mountains, flowing northward into Dennistoun Glacier. Named by the New Zealand Antarctic Place-Names Committee in 1983 after William Atkinson, field assistant, New Zealand Antarctic Division, mechanic with the New Zealand Antarctic Research Program (NZARP) geological party to the area, 1981–82, led by R.H. Findlay.

Ahrnsbrak Glacier glacier in Antarctica

Ahrnsbrak Glacier is a glacier in the Enterprise Hills of the Heritage Range in Antarctica, flowing north between Sutton Peak and Shoemaker Peak to the confluent ice at the lower end of Union Glacier. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1961–66, and was named by the Advisory Committee on Antarctic Names for William F. Ahrnsbrak of the United States Antarctic Research Program, a glaciologist at Palmer Station in 1965.

The Bennett Nunataks are two rock nunataks 0.5 nautical miles (1 km) apart, lying 0.5 nautical miles north of Lackey Ridge in the Ohio Range of the Horlick Mountains. They were surveyed by the United States Antarctic Research Program Horlick Mountains Traverse party in December 1958, and named by the Advisory Committee on Antarctic Names for John B. Bennett, a geomagnetist-seismologist at Byrd Station, 1960.

Otago Spur is a small spur projecting northward from the Buckeye Table, west of Discovery Ridge, Ohio Range. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photographs, 1958–59. The spur was studied by a New Zealand Antarctic Research Program (NZARP) geological party, 1983–84, and named after Otago University, the alma mater of Jonathan Aitchison, a member of the field party.

Mount Wendland is a peak near the head of Massam Glacier, 2 nautical miles (3.7 km) northeast of Mount Kenney, in the Prince Olav Mountains. The feature was geologically mapped on November 18, 1970, by the United States Antarctic Research Program (USARP) Ohio State University Party of 1970–71. Named by Advisory Committee on Antarctic Names (US-ACAN) for Vaughn P. Wendland, geologist and field assistant with the Ohio State party.

Wessbecher Glacier glacier in Antarctica

Wessbecher Glacier is a glacier about 7 nautical miles (13 km) long, draining southeast from Mount Inderbitzen and south from Mount Mullen between Peristera Peak, Lishness Peak and Stikal Peak on the main ridge of Sentinel Range on the west and Marze Peak in Petvar Heights on the east, in the Ellsworth Mountains, Antarctica.

Knox Peak is a small but distinctive rock peak, or nunatak, located between Vann Peak and Lackey Ridge at the west end of the Ohio Range, Antarctica. It was surveyed by the United States Antarctic Research Program Horlick Mountains Traverse party in December 1958 and named by the Advisory Committee on Antarctic Names for Antarctic cartographer Arthur S. Knox, who worked for the Branch of Special Maps, U.S. Geological Survey.

Museum Ledge is the ledge is a flat sandstone bed about 25 m long and 9 to 12 m wide exposed by erosion. The feature is a fossil locality. It contains excellently displayed fossil wood and is located on the southwest shoulder of Mount Glossopteris in the Ohio Range, Horlick Mountains. The name alludes to the display of fossil wood found here and was suggested by William E. Long, geologist with the Ohio State University expedition who worked in these mountains in the 1960-61 and 1961-62 austral summers.

Freyberg Mountains

The Freyberg Mountains are a group of mountains in Victoria Land, Antarctica, bounded by Rennick Glacier, Bowers Mountains, Black Glacier, and Evans Neve. Named for New Zealand's most famous General, Lord Bernard Freyberg, by the Northern Party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1963-64. This mountain group includes the Alamein Range. These topographical features all lie situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Fleming Summit is a peak rising to over 4,200 metres (13,800 ft), 1.5 kilometres (0.9 mi) west of Mount Kirkpatrick in the Queen Alexandra Range, Antarctica. It was named by the Advisory Committee on Antarctic Names in 1995 after Thomas H. Fleming, a geologist at Ohio State University, who conducted field research in this area, 1985–86 and 1990–91.

Salient Nunatak is a prominent cusp-shaped nunatak which stands out from the north side of Ohio Range, Horlick Mountains, 3 nautical miles (6 km) northeast of Mount Glossopteris. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photographs, 1958–59. Named by the New Zealand Antarctic Place-Names Committee (NZ-APC) following geological work in the area by a New Zealand Antarctic Research Program (NZARP) field party, 1983–84.

Scuppers Icefalls is a prominent line of icefalls, 5 nautical miles (9 km) long and nearly 400 m high, between Mount Razorback and Mount Nespelen in Convoy Range, Victoria Land. The icefalls are the main outflow draining from Flight Deck Neve into Benson Glacier. One of a group of nautical names in Convoy Range, this descriptive name is derived from the drainage of the feature, suggestive of stormwater on a ship's deck draining through scuppers along the rail. Named by a New Zealand Antarctic Research Program (NZARP) field party, 1989–90.

Vann Peak is a small but prominent bare rock peak which is the central and dominant feature of three aligned peaks at the west end of Ohio Range. It was surveyed by the United States Antarctic Research Program (USARP) Horlick Mountains Traverse party in December 1958, and was named by the Advisory Committee on Antarctic Names (US-ACAN) for Charlie E. Vann, the chief of the photogrammetry unit responsible for Antarctic maps in the Branch of Special Maps, U.S. Geological Survey.

Lackey Ridge is an east–west ridge, 4 nautical miles (7 km) long, that forms the western end of Buckeye Table in the Ohio Range, Horlick Mountains, Antarctica. It was named by the Advisory Committee on Antarctic Names for Larry L. Lackey, a geologist with the Ohio State University expedition to the Horlick Mountains in 1960–61.

North Magnetic Pole Wandering point on the Northern Hemisphere

The North Magnetic Pole is a wandering point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downwards. There is only one location where this occurs, near the Geographic North Pole and the Geomagnetic North Pole.

The New Zealand Antarctic Research Programme (NZARP) was a research program that operated a permanent research facility in Antarctica from 1959 to 1996. It was created by the Geophysics Division of New Zealand's Department of Scientific and Industrial Research (DSIR), originally based in Wellington. The programme promoted research in geochemistry, zoology, geology, botany, meteorology, and limnology.