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Delta Peak (British Columbia)
Delta Peak () is a very sharp peak marking a pronounced corner point on Ackerman Ridge, 6 nautical miles (11 km) northeast of Mount Gjertsen, in the La Gorce Mountains. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–64, and was so named by the New Zealand Geological Survey Antarctic Expedition The New Zealand Geological Survey Antarctic Expedition (NZGSAE) describes a series of scientific explorations of the continent Antarctica. The expeditions were notably active throughout the 1950s and 1960s. Features named by the expeditions 1957 ..., 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''. References Mountains of Marie Byrd Land {{MarieByrdLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ackerman Ridge
Ackerman Ridge () is 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 Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Ronnie J. Ackerman, navigator of U.S. Navy Squadron VX-6 during Operation Deep Freeze 1965 and 1966. There are three spurs on the south-western side of Ackerman Ridge, including Surprise Spur Surprise Spur () is a prominent spur, the northernmost of three spurs on the southwest side of Ackerman Ridge in the La Gorce Mountains of Antarctica. First mapped by United States Geological Survey The United States Geological Survey (USGS) .... Ridges of Marie Byrd Land Queen Maud Mountains {{MarieByrdLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Gjertsen
The La Gorce Mountains () are a group of mountains, spanning , 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. They 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. Features Geographical features include: * Ackerman Ridge * Beard Peak * Delta Peak * Gjertsen Promontory * Goldstream Peak * Graves Nunataks * Hourglass Buttress * Johansen Peak * Kessens Peak * Klein Glacier * Mount Gjertsen * Mount Grier * Mount Mooney * Mount Paine * Robison Glacier * Scott Glacier * Surprise Spur * Waterhouse Spur The La Gorce Mountains () are a group of mountains, spanning , standing between the tributary Robison Glacier and Klein Glacier at the east side of the upper reaches of the Scott Glacier (Transantarctic Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Gorce Mountains
The La Gorce Mountains () are a group of mountains, spanning , 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. They 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. Features Geographical features include: * Ackerman Ridge * Beard Peak * Delta Peak * Gjertsen Promontory * Goldstream Peak * Graves Nunataks * Hourglass Buttress * Johansen Peak * Kessens Peak * Klein Glacier * Mount Gjertsen * Mount Grier * Mount Mooney * Mount Paine * Robison Glacier * Scott Glacier * Surprise Spur * Waterhouse Spur The La Gorce Mountains () are a group of mountains, spanning , standing between the tributary Robison Glacier and Klein Glacier at the east side of the upper reaches of the Scott Glacier (Transantarctic Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the 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's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Geological Survey Antarctic Expedition
The New Zealand Geological Survey Antarctic Expedition (NZGSAE) describes a series of scientific explorations of the continent Antarctica. The expeditions were notably active throughout the 1950s and 1960s. Features named by the expeditions 1957–1958 expedition The 1957–1958 expedition went to the Ross Dependency and named the Borchgrevink Glacier. Other features named include: * Carter Ridge * Felsite Island * Halfway Nunatak * Hedgehog Island * Moraine Ridge 1958–1959 expedition * Cadwalader Beach * Cape Hodgson * Carter Ridge * Isolation Point * Mountaineer Range * Mount Aurora * Mount Hayward * Mount Henderson (White Island) * Mount Bird. 1960–1961 expedition * Deverall Island * Lonewolf Nunataks 1961–1962 expedition * Aurora Heights * The Boil * Ford Spur * Graphite Peak * Half Century Nunatak * Half Dome Nunatak * Hump Passage * Last Cache Nunatak * Lookout Dome * Montgomerie Glacier * Mount Fyfe * Mount Macdonald * Snowshoe Pass * Turret Nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta (letter)
Delta (; uppercase Δ, lowercase δ or 𝛿; el, δέλτα, ''délta'', ) is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter dalet 𐤃. Letters that come from delta include Latin D and Cyrillic Д. A river delta (originally, the delta of the Nile River) is so named because its shape approximates the triangular uppercase letter delta. Contrary to a popular legend, this use of the word ''delta'' was not coined by Herodotus. Pronunciation In Ancient Greek, delta represented a voiced dental plosive . In Modern Greek, it represents a voiced dental fricative , like the "th" in "that" or "this" (while in foreign words is instead commonly transcribed as ντ). Delta is romanized as ''d'' or ''dh''. Uppercase The uppercase letter Δ is used to denote: * Change of any changeable quantity, in mathematics and the sciences (more specifically, the difference operator); for example, in:\frac = \f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
