Brown Bluff

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 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]

Brown Bluff
Brown Bluff as seen from Antarctic Sound
Highest point
Elevation745 m (2,444 ft)[1]
ListingList of subglacial volcanoes
List of volcanoes in Antarctica
Coordinates63°32′S 56°55′W[1]
Mountain typeTuya
Volcanic fieldJames Ross Island Volcanic Group
Last eruptionPleistocene

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]

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