Brown Bluff
Volcano located in Antarctica / From Wikipedia, the free encyclopedia
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For the rock art site in northwestern Arkansas, see Brown Bluff (Washington County, Arkansas).
Brown Bluff is a basalt tuya on the Tabarin Peninsula of northern Antarctica.[2] It formed in the last 1 million years as a result of subglacial eruptions within an englacial lake. The volcano's original diameter is thought to have been about 12–15 kilometers (7.5–9.3 mi) and was probably formed by a single vent. Brown Bluff is divided into four stages: pillow volcano, tuff cone, slope failure, and hyaloclastite delta; and into five structural units.[3]
Quick Facts Highest point, Elevation ...
Brown Bluff | |
---|---|
Highest point | |
Elevation | 745 m (2,444 ft)[1] |
Listing | List of subglacial volcanoes List of volcanoes in Antarctica |
Coordinates | 63°32′S 56°55′W[1] |
Geography | |
Geology | |
Mountain type | Tuya |
Volcanic field | James Ross Island Volcanic Group |
Last eruption | Pleistocene |
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The volcano gets its name from its steep slopes and brown-to-black hyaloclastite. It was applied by the Falklands Islands Dependencies Survey following their survey in 1946.[1]