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Boyd Ridge
Boyd Ridge () is an ice-covered ridge, long, which extends in an east–west direction and forms the south end of the Crary Mountains in Marie Byrd Land. It is separated from the main peaks of the group by Campbell Valley. It was mapped by the United States Geological Survey from ground surveys and from U.S. Navy air photos, 1959–66, and named by the Advisory Committee on Antarctic Names for John C. Boyd, a United States Antarctic Research Program biologist at McMurdo Station McMurdo Station is a United States Antarctic research station on the south tip of Ross Island, which is in the New Zealand-claimed Ross Dependency on the shore of McMurdo Sound in Antarctica. It is operated by the United States through the Unit ..., 1965–66 and 1966–67 seasons. See also * Runyon Rock References Ridges of Marie Byrd Land Volcanoes of Marie Byrd Land Crary Mountains {{MarieByrdLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crary Mountains
Crary Mountains () are a group of ice-covered volcanoes in Marie Byrd Land, Antarctica. They consist of two or three shield volcanoes, named Mount Rees, Mount Steere and Mount Frakes, which developed during the course of the Miocene and Pliocene and last erupted about 30,000-40,000 years ago. The first two volcanoes are both heavily incised by cirques, while Mount Frakes is better preserved and has a wide caldera at its summit. Boyd Ridge is another part of the mountain range and lies southeast of Mount Frakes; it might be the emergent part of a platform that underlies the mountain range. The volcanoes consist mainly of basalt, trachyte and phonolite in the form of lava flows, scoria and hydrovolcanic formations. Volcanic activity here is linked to the West Antarctic Rift system, which is responsible for the formation of a number of volcanoes in the region. During their existence, the range was affected by glaciation and glacial-volcanic interactions. Geography and geomorphol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
