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Leskov Island

성층화산 · United Kingdom · 190m

The 1-km-wide (maximum E-W direction) Leskov Island is shown in this 19 March 2021 PlanetScope satellite image (N is at the top). The island is the surface manifestation of a seamount chain that extends 60 km SW of Zavodovski in the South Sandwich Islands and is the smallest of the island group. The island coastline is entirely cliffs and it is constructed of eroded lava flows.
The 1-km-wide (maximum E-W direction) Leskov Island is shown in this 19 March 2021 PlanetScope satellite image (N is at the top). The island is the surface manifestation of a seamount chain that extends 60 km SW of Zavodovski in the South Sandwich Islands and is the smallest of the island group. The island coastline is entirely cliffs and it is constructed of eroded lava flows. · 사진: Satellite image courtesy of Planet Labs Inc., 2021 (https://www.planet.com/). · Wikimedia Commons
화산 유형
성층화산
국가
United Kingdom
지역
Antarctic-Scotia Volcanic Regions / South Sandwich Volcanic Arc
해발
190m
좌표
-56.656, -28.140
마지막 분화
미확인
판구조 환경
Subduction zone / Oceanic crust (< 15 km)
화산 지형
Composite
주요 암석
Andesite / Basaltic Andesite
지질학적 요약

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).

Wikipedia 요약

영어 요약

Leskov Island is one of the three Traversay Islands that form a subgroup of the South Sandwich Islands, in the Southern Ocean.

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