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Leskov Island

Stratovolkan · United Kingdom · 190 m

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. · Foto: Satellite image courtesy of Planet Labs Inc., 2021 (https://www.planet.com/). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United Kingdom
Wilayah
Antarctic-Scotia Volcanic Regions / South Sandwich Volcanic Arc
Ketinggian
190 m
Koordinat
-56.656, -28.140
Letusan terakhir
Tidak diketahui
Kondisi tektonik
Subduction zone / Oceanic crust (< 15 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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).

Ringkasan Wikipedia

Ringkasan Inggris

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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