Leskov Island

sopka – Stratovolcano, United Kingdom, Antarctic-Scotia Volcanic Regions

Kde

United Kingdom, Antarctic-Scotia Volcanic Regions

Typ (GVP)

Stratovolcano

Nadmořská výška

190 m

Tektonické prostředí

Subduction zone / Oceanic crust (< 15 km)

Poloha

-56,656°, -28,140°

The small crescent-shaped Leskov Island lies about 50 km W of the main axis of the South Sandwich Islands, but appears to be comparable in age to volcanoes along the main arc. Only 900 m long and 400 m wide, it is bounded by steep cliffs and is the eroded remnant of a small andesitic stratovolcano. Its arcuate, NE-facing escarpment is concave toward Crater Bay, the site of the main eruptive center. A single Potassium-Argon determination gave an age of 0.5 million years, but fumarolic activity was recorded along the summit ridge in 1911 and 1964 (LeMasurier and Thomson, 1990).

Text: Smithsonian Global Volcanism Program.

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