Trigon Bluff ( 72°29′S169°9′E / 72.483°S 169.150°E Coordinates: 72°29′S169°9′E / 72.483°S 169.150°E ) is a steep, triangular bluff 10 nautical miles (18 km) west of Football Mountain, rising to 1,245 m on the north side of Tucker Glacier. Named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1957–58, which placed a triangulation station on its summit. The name is descriptive.

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.
Football Mountain is a mountain, 830 metres (2,720 ft) high, with a prominent and peculiar rock scar called The Football on its north side, on the ridge between Edisto Inlet and Tucker Glacier in Antarctica. It was occupied as a survey station, and marked by a large rock cairn, by the New Zealand Geological Survey Antarctic Expedition, 1957–58, who named it for The Football.
Tucker Glacier is a major valley glacier of Victoria Land, about 144 km (90 mi) long, flowing southeast between Admiralty Mountains and Victory Mountains to the Ross Sea. There is a snow saddle at the glacier's head, just west of Homerun Range, from which Ebbe Glacier flows northwestward.
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The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility.
The Geographic Names Information System (GNIS) is a database that contains name and locative information about more than two million physical and cultural features located throughout the United States of America and its territories. It is a type of gazetteer. GNIS was developed by the United States Geological Survey in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names.
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Mount Trident is a prominent peak (2,480 m) with three closely spaced summits, rising above Trigon Bluff on the north side of Tucker Glacier in Victoria Land, Antarctica. So named by New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1957–58, because of the three summits.
All-Blacks Nunataks is a group of conspicuous nunataks lying midway between Wallabies Nunataks and Wilhoite Nunataks at the southeast margin of the Byrd Névé in Antarctica. Named by the New Zealand Geological Survey Antarctic Expedition (1960–61) for the well known New Zealand national rugby union team.
Alpha Bluff is a high bluff on the west side of Shults Peninsula, at the east side of Skelton Glacier in Antarctica. Surveyed and named in 1957 by the New Zealand party of the Commonwealth Trans-Antarctic Expedition (1956–58). Named after the first letter of the Greek alphabet because it is the most southerly of all bluffs on the Skelton Glacier.
Baker Glacier is a small tributary glacier that enters Whitehall Glacier just north of Martin Hill, in the Victory Mountains of Victoria Land, Antarctica. It was mapped by the United States Geological Survey from surveys and from U.S. Navy air photos, 1960–62, and named by the Advisory Committee on Antarctic Names for John R. Baker, biologist at Hallett Station in 1967–68 and 1968–69.
Baldwin Bluff is a rock bluff along the southwest side of Ironside Glacier, about 5 nautical miles (10 km) southwest of the summit of Mount Whewell, in the Admiralty Mountains, Victoria Land, Antarctica. The geographical feature was first mapped by the United States Geological Survey from surveys and from U.S. Navy air photos, 1960–64, and was named by the Advisory Committee on Antarctic Names for Howard A. Baldwin, a biologist at McMurdo Station, 1966–67. The bluff lies on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.
June Nunatak is the central of three nunataks in mid-stream of the upper Liv Glacier, standing about 4 nautical miles (7 km) southeast of Mount Wells, in the Queen Maud Mountains of Antarctica. It was named by the Southern party of the New Zealand Geological Survey Antarctic Expedition (1961–62) for Harold June, an aviator and engineer on the South Pole flight of U.S. Navy Commander Richard E. Byrd in 1929.
Jennings Bluff is a dark, flat-topped outcrop in the Nicholas Range of Antarctica, 10 nautical miles (19 km) north of Mount Storegutt. It rises about 100 metres (330 ft) above the general ice level and has a steep eastern side, backing to an ice scarp in the west. The bluff was discovered by the British Australian New Zealand Antarctic Research Expedition, 1929–31, under Mawson. It was mapped by Norwegian cartographers from aerial photos taken by the Lars Christensen Expedition, 1936–37, and called Brattstabben. It was photographed from Australian National Antarctic Research Expeditions aircraft in 1956 and remapped, and was renamed by the Antarctic Names Committee of Australia in 1961 for Noel Durrent Jennings, an assistant diesel mechanic at Mawson Station in 1960.
Fruitcake Bluff is a steep rock outcrop in the form of a bluff 100 metres (330 ft) high, extending in a northeast–southwest direction for 1 nautical mile (2 km) in the southeast portion of Thompson Spur, in the Daniels Range, Victoria Land, Antarctica. It was recorded by United States Antarctic Research Program geologists C.C. Plummer and R.S. Babcock, who made a geological reconnaissance of Daniels Range in December 1981. It was descriptively named from the prevalent intrusive rock on the bluff which has the appearance in color and texture of a fruitcake. The bluff lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.
Turbulence Bluffs is a three high bluffs with vertical faces on the northwest but merging with the ice sheet on the southeast, standing along the east side of Robert Glacier 16 nautical miles (30 km) northeast of Rayner Peak in Enderby Land. Mapped from ANARE surveys and air photos, 1954-66. So named by ANARE because of severe turbulence encountered while attempting a helicopter landing in 1965.
Towles Glacier is a glacier descending from the western slopes of Mount Humphrey Lloyd to enter Tucker Glacier northwest of Trigon Bluff, in Victoria Land. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-62. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant William J. Towles, U.S. Navy, medical officer at Hallett Station, 1960.
Purvis Peak is a peak (2,250 m) 2 nautical miles (3.7 km) northeast of Mount Northampton in the Victory Mountains of Victoria Land. The peak overlooks the terminus of Tucker Glacier from the south. Mapped by New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1957–58, and the United States Geological Survey (USGS), 1960–62. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Ronald S. Purvis, U.S. Navy, of Squadron VX-6, pilot of Otter aircraft at Ellsworth Station, 1956–57, and of R5D Skymaster aircraft at McMurdo Station, 1957–58.
Mount F. L. Smith is a mountain, 2,635 metres (8,650 ft) high, standing 1 nautical mile (2 km) northeast of Mount Fox in the Queen Alexandra Range of Antarctica. It was discovered by the British Antarctic Expedition, 1907–09, and named for F.L. Smith, a London tobacconist who was a supporter of the expedition.
Falla Bluff is a prominent rocky coastal bluff at the head of Utstikkar Bay. It was discovered in February 1931 by the British Australian New Zealand Antarctic Research Expedition under Mawson, and named by him for R.A. Falla, ornithologist with the expedition.
Garrard Glacier is a glacier in the Queen Alexandra Range of Antarctica, draining eastward from the névé between Mount Lockwood and Mount Kirkpatrick and entering Beardmore Glacier south of Bell Bluff. It appears that the British Antarctic Expedition, 1910–13, applied the name "Garrard Glacier" to the feature which had been named Bingley Glacier by Ernest Shackleton in 1908. The area was surveyed by the New Zealand Geological Survey Antarctic Expedition (1961–62), who retained Bingley Glacier on the basis of priority and reapplied the name Garrard Glacier to this previously unnamed feature. The name is for Apsley Cherry-Garrard, a zoologist with the British Antarctic Expedition.
Hawthorne Bluff is a rock bluff at the south end of the McAllister Hills in Victoria Land, Antarctica. It was named by the Advisory Committee on Antarctic Names in 2004 after Ann Parks Hawthorne, a photographer from Washington, D.C., who photodocumented the U.S. Antarctic Program in several field seasons, 1984–2003.
Hei Glacier is a glacier flowing northwest between the Hamrane Heights and the Robin Heights in the Sverdrup Mountains of Queen Maud Land, Antarctica. It was photographed from the air by the Third German Antarctic Expedition (1938–39). It was mapped by Norwegian cartographers from surveys and air photos by the Norwegian–British–Swedish Antarctic Expedition (1949–52) and from air photos by the Norwegian expedition (1958–59) and named Heibreen.
Helms Bluff is a prominent north-facing bluff 10 nautical miles (19 km) east of Mount Morning in Victoria Land, Antarctica. It was mapped by the United States Geological Survey from ground surveys and Navy air photos, and was named by the Advisory Committee on Antarctic Names in 1963 for Lieutenant Commander Louis L. Helms, U.S. Navy, officer in charge of the Squadron VX-6 wintering-over detachment at McMurdo Station in 1961.
Mount Marquis is a mountain in the southern part of the Du Toit Mountains, situated 4 nautical miles (7 km) north of Maury Glacier, 28 nautical miles (52 km) south-southwest of Dietz Bluff and 27 nautical miles (50 km) due west of the north end of Pullen Island, on the Black Coast of Palmer Land, Antarctica. It was mapped by the United States Geological Survey (USGS) from U.S. Navy aerial photographs, 1966–69, and was named by the Advisory Committee on Antarctic Names after Peter T. Marquis, a general assistant with the British Antarctic Survey (BAS), and a member of the joint BAS–USGS party to this area, 1986–87.
Kirk Glacier is a tributary glacier draining southeast along the south side of Fischer Ridge into Ironside Glacier, in the Admiralty Mountains of Victoria Land, Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–64, and was named by the Advisory Committee on Antarctic Names for Edward Kirk, U.S. Navy, a commissaryman at McMurdo Station, 1967.
Langskavlen Glacier is a short, steep glacier flowing from the north side of Skavlhø Mountain in the Payer Mountains of Queen Maud Land, Antarctica. It was mapped by Norwegian cartographers from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Langskavlen.