Threshold Nunatak ( Coordinates: ) is an isolated nunatak located at the mouth of Tillite Glacier, 5 nautical miles (9 km) northeast of Portal Rock, in Queen Alexandra Range. The name was suggested by John Gunner of the Ohio State University Geological Expedition, 1969–70, who was landed by helicopter to collect a rock sample here. The name is in association with Portal Rock and also reflects the location at the mouth of Tillite Glacier.
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The Forrestal Range is a largely snow-covered mountain range, about 105 km (65 mi) long, standing east of Dufek Massif and the Neptune Range in the Pensacola Mountains of Antarctica. Discovered and photographed on January 13, 1956 on a transcontinental patrol plane flight of U.S. Navy Operation Deep Freeze I from McMurdo Sound to the vicinity of the Weddell Sea and return.
The Dominion Range is a broad mountain range, about 48 km (30 mi) long, forming a prominent salient at the juncture of the Beardmore and Mill glaciers in Antarctica. The range is part of the Queen Maud Mountains
Polar Times Glacier is a glacier on Ingrid Christensen Coast, flowing northward between Svarthausen Nunatak and Boyd Nunatak into the western part of Publications Ice Shelf. It was delineated by John H. Roscoe from aerial photographs taken by USN Operation Highjump, 1946–1947, and named by Roscoe after The Polar Times, a polar journal published by the American Polar Society, New York City.
The Prince Charles Mountains are a major group of mountains in Mac. Robertson Land in Antarctica, including the Athos Range, the Porthos Range, and the Aramis Range. The highest peak is Mount Menzies. Other prominent peaks are Mount Izabelle and Mount Stinear. These mountains together with other scattered peaks form an arc about 260 miles long, extending from the vicinity of Mount Starlight in the north to Goodspeed Nunataks in the south.
Castle Rock is a bold rock crag, 415 metres (1,360 ft) high, standing 3 miles (5 km) northeast of Hut Point on the central ridge of Hut Point Peninsula, Ross Island. It was discovered by the British National Antarctic Expedition, 1901–04, under Robert Falcon Scott, who so named it because of its shape.
Cassidy Glacier is a glacier 7 nautical miles (13 km) long and 2 nautical miles (4 km) wide, flowing northeast into upper Taylor Glacier between Depot Nunatak and the northwest end of the Quartermain Mountains, in Victoria Land. The descriptive names "South-West Arm" and "South Arm" were applied to this glacier and to the part of Ferrar Glacier south of Knobhead, respectively, by the British National Antarctic Expedition, 1901–04. Subsequent mapping has shown that the glacier described here is part of the Taylor Glacier system.
Oku-iwa Glacier is a glacier flowing to the sea just west of Oku-iwa Rock on the coast of Queen Maud Land. Mapped from surveys and air photos by Japanese Antarctic Research Expedition (JARE), 1957–62, and named after nearby Oku-iwa Rock.
Stuckless Glacier is a broad glacier in the southwest part of Black Island, Ross Archipelago. If flows southwest between Rowe Nunataks and Cape Beck to Moraine Strait, McMurdo Ice Shelf. Named by Advisory Committee on Antarctic Names (US-ACAN) (1999) after John S. Stuckless, Department of Geology, Northern Illinois University, DeKalb, who, in several seasons from 1972–73, investigated the geochemistry of McMurdo volcanic rocks, correlating samples from several Ross Island sites with DVDP core samples obtained in McMurdo Dry Valleys.
Portal Rock is a turret-like rock knob in Queen Alexandra Range, standing 1.5 nautical miles (2.8 km) northwest of Fairchild Peak, just south of the mouth of Tillite Glacier. So named by the Ohio State University geology party (1966–67) because the only safe route to Tillite Glacier lies between this rock and Fairchild Peak.
Pagoda Peak is a sharp peak, 3,040 m, between the heads of Tillite and Montgomerie Glaciers, 3 nautical miles (6 km) north of Mount Mackellar in Queen Alexandra Range. So named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE) (1961–62) because of its shape.
Fairchild Peak is a conspicuous rock peak, 2,180 metres (7,150 ft) high, standing 1.6 nautical miles (3 km) south-southeast of Portal Rock, at the south side of the mouth of Tillite Glacier. It was named by the Advisory Committee on Antarctic Names for William W. Fairchild, a United States Antarctic Research Program cosmic ray scientist at McMurdo Sound, 1961.
Gratton Nunatak is a bare, linear nunatak lying at the south side of the mouth of McCarthy Glacier, Antarctica, where the latter enters Reedy Glacier. 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 John W. Gratton, a construction mechanic at Byrd Station in 1962.
Lliboutry Glacier is a glacier flowing southwest from the Boyle Mountains of Antarctica into Bourgeois Fjord, Loubet Coast. It was named by the UK Antarctic Place-Names Committee in 1983 after Louis A.F. Lliboutry, a French physicist and glaciologist who investigated the mechanical deformation of ice and the micro-meteorological properties of ice surfaces, and who also made a general study of glaciers in the Antarctic Peninsula. Lliboutry was Director of the Laboratory of Glaciology, University of Grenoble, 1958–83, and President of the International Commission on Snow and Ice, 1983–87.
The Martin Nunataks are a pair of isolated nunataks situated along the northern margin of David Glacier, 9 nautical miles (17 km) southeast of Mount Wood, in Victoria Land, Antarctica. They were mapped by the United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1956–62, and were named by the Advisory Committee on Antarctic Names for Robert D. Martin, a USGS topographic engineer at McMurdo Station, 1961–62.
Marvin Nunatak is a prominent nunatak 1 nautical mile (2 km) south of Depot Nunatak, rising to 2,090 metres (6,860 ft) on the west side of Cassidy Glacier, to the west of the Quartermain Mountains in Victoria Land, Antarctica. It was presumably first seen by the British National Antarctic Expedition, 1901–04, from nearby Depot Nunatak, and was named by the Advisory Committee on Antarctic Names in 1992 after Ursula B. Marvin of the Smithsonian Astrophysical Observatory, Cambridge, Massachusetts. Marvin was a field party member of the Antarctic Search for Meteorites expeditions to Victoria Land, 1978–79 and 1981–82, did field work at Seymour Island, 1984–85, and was a member of the Advisory Committee to the Division of Polar Programs, National Science Foundation, from 1983.
The Himmelberg Hills are a linear group of hills with prominent rock outcrops, 11.5 nautical miles (21 km) long, at the southwest end of Saratoga Table, in the Pensacola Mountains of Antarctica. Named features in the group include Haskill Nunatak, 1,710 metres (5,610 ft) high, near the center, and Ray Nunatak and Beiszer Nunatak at the southern end. The hills were named after Glen R. Himmelberg of the Department of Geology at the University of Missouri. His laboratory research and scientific reporting with A.B. Ford (1973–91) on the petrology of Antarctica and specifically on the Dufek intrusion of the northern Pensacola Mountains was critical for the understanding of the evolution of this major igneous complex.
Sentinel Nunatak is a high, black, pyramid-shaped nunatak at the mouth of Drygalski Glacier, on Nordenskjöld Coast in Graham Land, Antarctica. Charted by the Falkland Islands Dependencies Survey (FIDS) in 1947 and so named because of its commanding position at the mouth of Drygalski Glacier.
Specimen Nunatak is a small but distinctive rock pinnacle that rises above the ice of Swithinbank Glacier about 4 nautical miles (7 km) south of the glacier terminus, in Graham Land. The feature was visited on February 9, 1941 by Herbert G. Dorsey and Joseph D. Healy of the United States Antarctic Service (USAS), 1939–41, who gave the name because the pinnacle was a good example of a nunatak projecting above a broad ice field.
Tillite Glacier is a tributary glacier flowing northwest from Pagoda Peak in Queen Alexandra Range to join Lennox-King Glacier north of Fairchild Peak. So named by New Zealand Geological Survey Antarctic Expedition (NZGSAE) (1961–62) because it contains outcrops of ancient moraine (tillite), indicative of glacial action in remote Paleozoic times.