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Nevado de Longaví

Longavi, Nevado de

Stratovolkan · Chile · 3175 m

The conical, glacier-clad Nevado de Longaví volcano is seen from the SE. In the foreground is a Holocene block-and-ash flow deposit. This late-Pleistocene to Holocene andesitic stratovolcano was constructed over a basement of sedimentary and granitic rocks. A small lava dome forms the 3242-m-high summit of Longaví. No historical eruptions are known, although fumarolic activity continues.
The conical, glacier-clad Nevado de Longaví volcano is seen from the SE. In the foreground is a Holocene block-and-ash flow deposit. This late-Pleistocene to Holocene andesitic stratovolcano was constructed over a basement of sedimentary and granitic rocks. A small lava dome forms the 3242-m-high summit of Longaví. No historical eruptions are known, although fumarolic activity continues. · Foto: Photo by José Naranjo, 2001 (Servico Nacional de Geologica y Mineria). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Chile
Wilayah
South America Volcanic Regions / Southern Andean Volcanic Arc
Ketinggian
3175 m
Koordinat
-36.196, -71.164
Letusan terakhir
-4890
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The conical Nevado de Longaví is a late-Pleistocene to Holocene, dominantly andesitic stratovolcano constructed over a basement of Tertiary volcaniclastic and granitic rocks. Two edifice-collapse events modified the E and SW flanks of a pre-Holocene edifice, and Holocene activity has been concentrated at the summit and on the E flanks. Andesitic-to-dacitic lava domes occupy the summit region. The latest eruptions produced a lava dome in the upper part of the collapse scarp and summit region that partially collapsed to the E, forming block-and-ash flow deposits. Fumarolic activity has been reported.

Ringkasan Wikipedia

Ringkasan Inggris

Nevado de Longaví is a volcano in the Andes of central Chile. The 3,242 m (10,636 ft) high volcano lies in the Linares Province, which is part of the Maule Region. It features a summit crater and several parasitic vents. The volcano is constructed principally from lava flows. Two collapses of the edifice have carved collapse scars into the volcano, one on the eastern slope known as Lomas Limpias and another on the southwestern slope known as Los Bueye. The volcano features a glacier and the Achibueno and Blanco rivers originate on the mountain.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
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4890 BCE~4890 BCE · 1 letusan · VEI maks. ?4890 BCE4890 BCE4889 BCE4889 BCE4889 BCE

Garis waktu rinci

  1. 4890 SM (±75 tahun)VEI ?Perkiraan geologi
    BCE 4890 – Berlangsung

Tautan eksternal

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