Bridgeman Island (South Shetland Islands)

Bridgeman Island or Bridgemans's Island or Bridgman Island or Helena Island is one of the South Shetland Islands. It is an almost circular, volcanic island marked by steep sides, 0.8 kilometres (0.5 mi) long and 240 m (787 ft) high, lying 37 kilometres (23 mi) east of King George Island. Bridgeman Island is located at 62°04′S 56°44′W and has an elevation of 240 m (787 ft). Bridgeman Island is an established name dating back to about 1820. Bridgeman Island is the remnants of a much larger volcanic edifice that is now largely submerged. The eroded volcano does not display youthful volcanic features. Several reports of 19th-century fumarolic activity may instead refer to the much younger Penguin Island.

A promontory on Bridgeman Island
Bridgeman Island
Location of King George Island in the South Shetland Islands
Bridgeman Island
Location of Bridgeman Island
Bridgeman Island
Bridgeman Island (Antarctica)
Geography
LocationAntarctica
Coordinates62°04′S 56°44′W
ArchipelagoSouth Shetland Islands
Length0.8 km (0.5 mi)
Highest elevation240 m (790 ft)
Administration
Administered under the Antarctic Treaty System
Demographics
PopulationUninhabited (although there are some weather stations)

Geology

The island is the top of a Pleistocene-Recent stratovolcano within the Bransfield Basin. The volcano has a base diameter of 25 km, and a height of 1050 m.[1]

See also

References
  1. Gonzalez-Ferran, O. (1991). Thomson, M.R.A.; Crame, J.A.; Thomson, J.W. (eds.). The Bransfield rift and its active volcanism, in Geological Evolution of Antarctica. Cambridge: Cambridge University Press. pp. 508–509. ISBN 9780521372664.


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