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Bristol Island   »  Summary

Bristol Island

Bristol Island Photo

Country:United Kingdom
Subregion Name:Antarctica
Volcano Number:1900-08=
Volcano Type: Stratovolcano
Volcano Status:Historical
Last Known Eruption: 1956 
Summit Elevation: 1100 m 3,609 feet
Latitude: 59.03°S 59°2'0"S
Longitude: 26.58°W 26°35'0"W

The 9 x 10 km Bristol Island near the southern end of the South Sandwich arc lies across Fortser's Passage from the Southern Thule Islands and forms one of the largest islands of the chain. Largely glacier-covered, it contains a horseshoe-shaped ridge at the interior extending northward from the highest peak, 1100-m-high Mount Darnley. A steep-sided flank cone or lava dome, Havfruen Peak, is located on the east side, and a young crater and fissure are on the west flank. Three large sea stacks lying off Turmoil Point at the western tip of the island may be remnants of an older now-eroded volcanic center. Both summit and flank vents on Bristol Island have been active during historical time. The latest eruption, during 1956, originated from the west-flank crater, and deposited cinder over the icecap. The extensive icecap on Bristol Island and the difficulty of landing make it the least explored of the South Sandwich Islands.

Global Volcanism ProgramDepartment of Mineral SciencesNational Museum of Natural HistorySmithsonian Institution

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