| Casey Range | |
|---|---|
  | |
| Highest point | |
| Elevation | 957 m (3,140 ft) |
| Coordinates | 67°47′S62°12′E / 67.783°S 62.200°E [1] |
Casey Range is a jagged, razor-backed ridge and a few nunataks in a line extending north–south, standing 8 miles (13 km) west of David Range, in the Framnes Mountains. It was discovered by the British Australian and New Zealand Antarctic Research Expedition (BANZARE), 1929–31, under Douglas Mawson, who named it for Rt. Hon. Richard G. Casey. [2]
The Casey Range is about 9.5 kilometres (5.9 mi) long. The main mass is in the north of the range, rising to a height of about 950 metres (3,120 ft), and extending for about 4 kilometres (2.5 mi). Further south, separated from the northern mass by a gap of about 2.5 kilometres (1.6 mi), there is a group of nunataks. These include the Lucas Ridge and the Woodberry Nunataks. [3]
According to the 1960 Sailing Directions for Antarctica: [4]
The Casey Range lies parallel to the David Range and about 10 miles further westward. It is not so rugged and broken as the ranges further eastward. The northern part is a dark ridge about 2,800 feet high- About 5 miles southward another ridge rises to about 3,100 feet and stretches southward for a distance of about 10 miles. About 25 miles westward of the Casey Range are a number of prominent detached peaks. [4]
The Casey Range consists of prominent north-south strike ridges. The slopes dip steeply to the east, and are precipitous to the west. [5] The north of the range has fairly open folding, while there is much tighter folding on Lucas Nunatak in the south. [6]
The geology of the Framnes Mountains as a whole is very similar to that of the Eastern Ghats in India, which lay beside the Mawson Coast before Gondwana broke up. The mountains are mostly formed of charnockite, a homogeneous brown rock similar to granite that mainly consists of potassium feldspar, quartz and pyroxene. These rocks were formed about 960 million years ago at a depth of about 20 kilometres (12 mi) as a molten mass within older metamorphosed sedimentary rocks. The charnockite contains pods of the metamorphosed sedimentary rocks as much as 20 kilometres (12 mi) wide, including most of the Casey Range. [7]
The rock types of the Casey range are not found elsewhere in the Mac.Robertson Land. [6] Crohn refers to the rocks as "metasediment". Throughout the range there are outcroppings of finely banded rock composed of sillimanite, garnet, pyroxene, quartz and feldspar gneiss. [5] The bands of alternating light and dark rock are up to 0.5 metres (1 ft 8 in) thick. In the north there are equal amounts of light and dark rocks, but to the south there is a higher proportion of dark rock. Garnet is uncommon in the north of the range, but is the main component of the dark bands in parts of Lucas Nunatak. [5] Between 80% and 90% of the range is composed of pyroxene-quartz-feldspar gneiss. There are also bands from 0.5 to 6 metres (1 ft 8 in to 19 ft 8 in) thick of fine- to medium-grained garnetiferous quartzite, small pyroxene lenses and quartz-feldspar pegmatite. [6]
In the northern mass Biatorella antarctica is the most common lichen. Lecidea woodberryi has also been found, as well as many other lichen species. [3]
The Forbes Glacier originates on the east of the Casey Range, about 25 kilometres (16 mi) south of the Holme Bay coast. Tributaries flow east and north through the nunataks of the range, and join into a stream of ice about 5 kilometres (3.1 mi) wide. [8] In the uppermost part of the glacier near the Casey Range the ice in the center of the glacier travels north at 59 metres (194 ft) per year. [9]
67°47′S62°11′E / 67.783°S 62.183°E . Group of small nunataks 1 mi N of Lucas Nunatak in the Casey Range, Framnes Mountains. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37. Visited by an ANARE party in 1962 and named for B.D. Woodberry, ionosphere physicist at Mawson Station, a member of the field party. [10]
67°48′S62°11′E / 67.800°S 62.183°E . Nunatak 1 mile (1.6 km) south of Woodberry Nunataks in the Casey Range, Framnes Mountains. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37. Visited by an ANARE party in April 1962. Named by ANCA for P.M. Lucas, officer in charge at Mawson Station in 1962. [11]
Mawson Station, commonly called Mawson, is one of three permanent bases and research outposts in Antarctica managed by the Australian Antarctic Division (AAD). Mawson lies in Holme Bay in Mac. Robertson Land, East Antarctica in the Australian Antarctic Territory, a territory claimed by Australia. Established in 1954, Mawson is Australia's oldest Antarctic station and the oldest continuously inhabited Antarctic station south of the Antarctic Circle. It houses approximately 20 personnel over winter and up to 53 in summer.
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, with a height of 3,228 m (10,591 ft). Other prominent peaks are Mount Izabelle and Mount Stinear. These mountains, together with other scattered peaks, form an arc about 420 km (260 mi) long, extending from the vicinity of Mount Starlight in the north to Goodspeed Nunataks in the south.
The Framnes Mountains is a group of Antarctic mountain ranges in Mac. Robertson Land, to the south of the Mawson Coast. The range is surrounded by, and largely covered by, an ice sheet.
The Scott Mountains are a large number of isolated peaks lying south of Amundsen Bay in Enderby Land of East Antarctica, Antarctica. Discovered on 13 January 1930 by the British Australian New Zealand Antarctic Research Expedition (BANZARE) under Sir Douglas Mawson. He named the feature Scott Range after Captain Robert Falcon Scott, Royal Navy. The term mountains is considered more appropriate because of the isolation of its individual features.
The David Range (67°54′S62°30′E is a mountain range that extends for 26 kilometres in the Framnes Mountains of Mac.Robertson Land in Antarctica. The range is surrounded by, and largely covered by, an ice sheet. Only the peaks are visible.
Lawson Nunatak is a small tooth-like nunatak lying 2 nautical miles (4 km) southeast of Branson Nunatak in the Masson Range of the Framnes Mountains of Antarctica. The feature was fixed by intersection from trigonometrical stations by Australian National Antarctic Research Expeditions in 1968. It was named by the Antarctic Names Committee of Australia for E. J. Lawson, a diesel mechanic at Mawson Station, who assisted with the survey work in 1967.
The Porthos Range is the second range south in the Prince Charles Mountains of Antarctica, extending for about 30 miles in an east-to-west direction between Scylla Glacier and Charybdis Glacier. First visited in December 1956 by the Australian National Antarctic Research Expeditions (ANARE) southern party under W.G. Bewsher (1956-57) and named after Porthos, a character in Alexandre Dumas, père's novel The Three Musketeers, the most popular book read on the southern journey.
On the continent of Antarctica, the Aramis Range is the third range south in the Prince Charles Mountains, situated 11 miles southeast of the Porthos Range and extending for about 30 miles in a southwest–northeast direction. It was first visited in January 1957 by Australian National Antarctic Research Expeditions (ANARE) southern party led by W.G. Bewsher, who named it for a character in Alexandre Dumas' novel The Three Musketeers, the most popular book read on the southern journey.
The Masson Range is a high broken chain of mountains, consisting primarily of the North Masson, Central Masson and South Masson Ranges, forming a part of the Framnes Mountains. Having several peaks over 1,000 metres (3,300 ft), the range extends in a north–south direction for 15 nautical miles (28 km). It was discovered and charted by the British Australian and New Zealand Antarctic Research Expedition, 1929–31, under Douglas Mawson, and named for Professor Sir David Orme Masson, a member of the Advisory Committee for this expedition as well as the Australasian Antarctic Expedition, 1911–14, also under Mawson. The mountains were first visited by an Australian National Antarctic Research Expeditions party led by John Béchervaise in 1956.
The Brown Range or Sørtindane Peaks is a group of seven peaks in the Framnes Mountains about four kilometres (2.5 mi) south of Mount Twintop in Mac. Robertson Land, Antarctica.
The Central Masson Range is the central segment of the three parts of the Masson Range, Antarctica. It rises to 1,120 metres (3,670 ft) and extends 4 nautical miles (7 km) in a north–south direction. The Masson Range was discovered and named by the British Australian New Zealand Antarctic Research Expedition, 1929–31, under Douglas Mawson. This central range was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936–37, and named "Mekammen". The approved name, suggested by the Antarctic Names Committee of Australia in 1960, more clearly identifies the feature as a part of Masson Range.
North Masson Range is part of the Masson Range, which is divided into three parts of which this segment is the northern, rising to 1,030 m and extending 3 nautical miles (6 km) in a north–south direction. The Masson Range was discovered and named by British Australian New Zealand Antarctic Research Expedition (BANZARE), 1929–31, under Mawson. This northern range was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936–37, and named Nordkammen. The approved name, suggested by Antarctic Names Committee of Australia (ANCA) in 1960, more clearly identifies the feature as a part of Masson Range.
Wakeford Nunatak is a small nunatak 3 nautical miles (6 km) east of the Central Masson Range in the Framnes Mountains, Mac. Robertson Land. Plotted from photos taken from ANARE aircraft in 1960 and seen by an ANARE party in 1962. Named by Antarctic Names Committee of Australia (ANCA) for R. Wakeford, cook at Mawson Station in 1962.
Watson Nunatak is a nunatak standing between Price and Van Hulssen Nunataks in the Trilling Peaks, Framnes Mountains, in Mac. Robertson Land. It was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936–37. I was named by the Antarctic Names Committee of Australia (ANCA) for K.D. Watson, a diesel mechanic at Mawson Station who assisted in the Framnes Mountains--Depot Peak survey by ANARE in 1965.
Filson Nunatak is a small nunatak 6 nautical miles (11 km) east of Trost Peak in the eastern part of the Framnes Mountains, Mac. Robertson Land, Antarctica. It was photographed from Australian National Antarctic Research Expeditions (ANARE) aircraft in 1958 and seen by an ANARE party in December 1962. It was named by the Antarctic Names Committee of Australia for R. Filson, a carpenter at Mawson Station in 1962, and a member of the party.
Fischer Nunatak is a nunatak, 750 metres (2,460 ft) high, standing 2 nautical miles (4 km) south of Mount Henderson in the northeast part of the Framnes Mountains, Mac. Robertson Land, Antarctica.
Mount Henderson is a mountain in the Framnes Mountains of Mac. Robertson Land in the Antarctic. It is southeast of Holme Bay and northeast of the Masson Range.
The South Masson Range is the southernmost of the three parts into which the Masson Range of theFramnes Mountains, Anatarctica is divided. It rises to 1,070 metres (3,510 ft) and extending 2 miles (3.2 km) in a northeast-southwest arc. The Masson Range was discovered and named by BANZARE, 1929-31, under Mawson. This southern range was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37, and named Sörkammen. The approved name, suggested by ANCA in 1960, more clearly identifies the feature as a part of Masson Range. Not: Gora Serkammen, Sörkammen, Sørkammen Crest, South Crest.
Forbes Glacier is a glacier entering the west part of Holme Bay on Mawson Coast, to the north of the Casey Range, in the Framnes Mountains of Antarctica.
This article incorporates public domain material from websites or documents of the United States Board on Geographic Names. This article incorporates public domain material from websites or documents of the United States Defense Mapping Agency.  | This Mac. Robertson Land location article is a stub. You can help Wikipedia by expanding it. |