La Gorce Mountains
La Gorce Mountains is located in Antarctica
La Gorce Mountains
Geography
ContinentAntarctica
RegionRoss Dependency
Range coordinates86°45′S 146°0′W / 86.750°S 146.000°W / -86.750; -146.000
Parent rangeQueen Maud Mountains

The La Gorce Mountains (86°45′S 146°0′W / 86.750°S 146.000°W / -86.750; -146.000) are a group of mountains, {{convert|20|nmi} long, standing between the tributary Robison Glacier and Klein Glacier at the east side of the upper reaches of the Scott Glacier, in the Queen Maud Mountains of Antarctica.[1]

Discovery and naming

The La Gorce Mountains were discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn, and named by Richard E. Byrd for John Oliver La Gorce, Vice President of the National Geographic Society.[1]

Location

The La Gorce Mountains are to the east of the head of the Scott Glacier where it is joined from the southeast by the Klein Glacier. The Robison Glacier flows west along the north of the La Gorce Mountains to join the Scott Glacier. The northwest of the mountains is defined by the Ackerman Ridge, Surprise Spur, Delta Peak and Mount Mooney. Further south are the Gjertsen Promontory and Mount Gjertsen, the Waterhouse Spur, Hourglass Buttress and Beard Peak. South of Mount Gjertsen are Mount Grier, Goldstream Peak and Johansen Peak. Mount Paine and Kessens Peak are in the extreme south.[2]

Isolated features to the southwest are the Davis Hills and Gardner Ridge. The Graves Nunataks are to the east.[2]

Features

La Gorce Mountains to the southwest of map

Ackerman Ridge

86°34′S 147°30′W / 86.567°S 147.500°W / -86.567; -147.500. A prominent rock ridge forming the northwest extremity of the La Gorce Mountains of the Queen Maud Mountains. Discovered and roughly mapped in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn. Named by United States Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Ronnie J. Ackerman, navigator of USN Squadron VX-6 during Operation Deep Freeze 1965 and 1966.[3]

Surprise Spur

86°34′S 147°50′W / 86.567°S 147.833°W / -86.567; -147.833. A prominent spur, the northernmost of three spurs on the southwest side of Ackerman Ridge. First mapped by the United States Geological Survey (USGS) from surveys and United States Navy air photos, 1960-64. So named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE) (1969-70) because, in the middle of an extensive region of purely basement rocks, slightly altered sedimentary rocks which seem to belong to the much younger Beacon series appear on this spur.[4]

Delta Peak

86°35′S 147°30′W / 86.583°S 147.500°W / -86.583; -147.500. A very sharp peak marking a pronounced corner point on Ackerman Ridge, 6 nautical miles (11 km; 6.9 mi) northeast of Mount Gjertsen. Mapped by USGS from surveys and United States Navy air photos, 1960-64. So named by NZGSAE, 1969-70, because as seen from the south the colorful rock strata present a well visible form that is suggestive of the Greek letter "Delta."[5]

Gjertsen Promontory

86°38′S 148°32′W / 86.633°S 148.533°W / -86.633; -148.533. A low but sharply rising promontory at the extremity of the spur trending north from Mount Gjertsen, in the La Gorce Mountains. The feature was mapped by USGS from surveys and United States Navy air photos, 1960-64. Named by NZGSAE, 1969-70, in association with Mount Gjertsen.[6]

Mount Gjertsen

86°40′S 148°27′W / 86.667°S 148.450°W / -86.667; -148.450. A mountain, 2,420 metres (7,940 ft) high, standing 2 nautical miles (3.7 km; 2.3 mi) northeast of Mount Grier in the La Gorce Mountains. Discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn. So named in an attempt to reconcile Byrd's discoveries with the names applied by Roald Amundsen in 1911-12. Amundsen had named a mountain in the general vicinity for Lieutenant Hj.F. Gjertsen of the Norwegian Navy, who was second mate on Amundsen's ship Fram and later ice pilot for the Byrd Antarctic Expedition, 1933-35.[6]

Waterhouse Spur

86°37′S 147°25′W / 86.617°S 147.417°W / -86.617; -147.417. A spur of well-exposed strata that juts southwest from the south portion of Ackerman Ridge, 6 nautical miles (11 km; 6.9 mi) northeast of Johansen Peak, in the La Gorce Mountains. First mapped by USGS from surveys and United States Navy air photos, 1960-64. Named by NZGSAE, 1969-70, for Barry C. Waterhouse, a member of the geological party who worked here.[7]

Hourglass Buttress

86°40′S 146°28′W / 86.667°S 146.467°W / -86.667; -146.467. A rock buttress, rising to 2,790 metres (9,150 ft) high, 3.5 nautical miles (6.5 km; 4.0 mi) W of Beard Peak in the La Gorce Mountains. Mapped by the USGS from surveys and United States Navy aerial photographs, 1960-64. Geologically mapped by a USARP-Arizona State University geological party, 1980-81. The name derives from a long snow chute up the face of the buttress.[8]

Beard Peak

86°40′S 145°25′W / 86.667°S 145.417°W / -86.667; -145.417. A peak, 2,360 metres (7,740 ft) high, along the north edge of the La Gorce Mountains, standing 4 nautical miles (7.4 km; 4.6 mi) south of the east tip of Mount Mooney. Mapped by USGS from surveys and USN air photos, 1960-63. Named by US-ACAN for Philip H. Beard, photographer with USN Squadron VX-6 during Operation Deep Freeze 1966 and 1967.[9]

Mount Grier

86°41′S 148°57′W / 86.683°S 148.950°W / -86.683; -148.950. A prominent mountain, 3,035 metres (9,957 ft) high, standing at the east side of the Scott Glacier where it forms the westernmost summit of the La Gorce Mountains. Discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn. Named by Byrd for Dr. G. Layton Grier, head of the L.D. Caulk Co. of Milford, DE, who contributed dental supplies to the Byrd Antarctic Expedition of 1928-30 and 1933-35.[10]

Goldstream Peak

86°41′S 148°30′W / 86.683°S 148.500°W / -86.683; -148.500. A peak rising to c. 2,800 metres (9,200 ft) high at the junction of ridges from Mount Gjertsen, Mount Grier, and Johansen Peak. The peak was geologically mapped by a USARP Arizona State University field party, 1980-81, and named by Edmund Stump, leader of the party. The name derives from a contact between shallow intrusions on the W face of the peak, which has produced gold, yellow, and brown coloration along a meandering line.[11]

Johansen Peak

86°43′S 148°11′W / 86.717°S 148.183°W / -86.717; -148.183. A prominent peak, 3,310 metres (10,860 ft) high, standing 3 nautical miles (5.6 km; 3.5 mi) east-southeast of Mount Grier. Discovered by R. Admiral Byrd on the South Pole Flight of Nov. 28-29, 1929, and mapped in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn. So named in an attempt to reconcile Byrd's discoveries with the names applied by Roald Amundsen in 1911. Amundsen had named a peak in the general vicinity for Hjalmar Johansen, a member of the Eastern Sledge Party of his 1910-12 expedition.[12]

Mount Paine

86°46′S 147°32′W / 86.767°S 147.533°W / -86.767; -147.533. A massive, flat-topped mountain, 3,330 metres (10,930 ft) high, forming a buttresstype projection of the western part of the La Gorce Mountains. Discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn, and named by Byrd for Stuart D.L. Paine, navigator and radio operator of that party.[13]

Kessens Peak

86°51′S 146°41′W / 86.850°S 146.683°W / -86.850; -146.683. A peak, 2,660 metres (8,730 ft) high, located 5 nautical miles (9.3 km; 5.8 mi) southeast of Mount Paine. Mapped by USGS from surveys and USN air photos, 1960-63. Named by US-ACAN for Gerard R. Kessens of USN Squadron VX-6, photographer on Operation Deep Freeze 1966 and 1967.[14]

Nearby features

Mount Mooney

86°34′S 145°48′W / 86.567°S 145.800°W / -86.567; -145.800. A ridge-shaped mountain, 2,850 metres (9,350 ft) high, standing just north of the La Gorce Mountains, where it rises above the middle of Robison Glacier, in the Queen Maud Mountains. Discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn, and named by R. Admiral Byrd for James E. Mooney, who assisted this and later Byrd expeditions. From 1959-65, Mooney served as Deputy United States Antarctic Projects Officer.[15]

Davis Hills

86°52′S 150°00′W / 86.867°S 150.000°W / -86.867; -150.000. A small group of hills lying at the south side of Klein Glacier where the latter enters Scott Glacier. Mapped by USGS from surveys and USN air photos, 1960-63. Named by US-AC AN for Parker Davis, photographer with USN Squadron VX-6 in Operation Deep Freeze 1966 and 1967.[16]

Gardner Ridge

86°57′S 148°24′W / 86.950°S 148.400°W / -86.950; -148.400. An ice-free ridge 4 nautical miles (7.4 km; 4.6 mi) southeast of Davis Hills, lying at the south side of Klein Glacier. Mapped by USGS from surveys and USN air photos, 1960-63. Named by US-ACAN for Eric T. Gardner of USN Squadron VX-6, photographer on Operation Deep Freeze 1966 and 1967.[17]

Graves Nunataks

86°43′S 141°30′W / 86.717°S 141.500°W / -86.717; -141.500. Small group of nunataks near the edge of the polar plateau, lying 14 nautical miles (26 km; 16 mi) east-southeast of Beard Peak. Mapped by USGS from surveys and USN air photos, 1960-63. Named by US-ACAN for Gerald V. Graves of USN Squadron VX-6, photographer on Operation Deep Freeze 1966 and 1967.[18]

References

  1. 1 2 Alberts 1995, p. 412.
  2. 1 2 Mount Blackburn USGS.
  3. ↑ Alberts 1995, p. 3.
  4. ↑ Alberts 1995, p. 725.
  5. ↑ Alberts 1995, p. 182.
  6. 1 2 Alberts 1995, p. 280.
  7. ↑ Alberts 1995, p. 797.
  8. ↑ Alberts 1995, p. 348.
  9. ↑ Alberts 1995, p. 53.
  10. ↑ Alberts 1995, p. 296.
  11. ↑ Alberts 1995, p. 284.
  12. ↑ Alberts 1995, p. 373.
  13. ↑ Alberts 1995, p. 553.
  14. ↑ Alberts 1995, p. 389.
  15. ↑ Alberts 1995, p. 502.
  16. ↑ Alberts 1995, p. 176.
  17. ↑ Alberts 1995, p. 269.
  18. ↑ Alberts 1995, p. 292.

Sources

  • Alberts, Fred G., ed. (1995), Geographic Names of the Antarctic (PDF) (2 ed.), United States Board on Geographic Names, retrieved 3 December 2023 Public Domain This article incorporates public domain material from websites or documents of the United States Board on Geographic Names.
  • Mount Blackburn, USGS: United States Geological Survey, retrieved 27 December 2023

Public Domain This article incorporates public domain material from websites or documents of the United States Geological Survey.

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