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Arjuno-Welirang

Stratovulcano · Indonesia · 3343 m

The volcanoes of Arjuno (right-center) and Welirang (left) are seen here NE of cultivated land. A line of cones have formed across the southern flank of Gunung Arjuno and extends to its eastern flank. Fumarolic areas with sulfur deposition occur at several locations on Gunung Welirang.
The volcanoes of Arjuno (right-center) and Welirang (left) are seen here NE of cultivated land. A line of cones have formed across the southern flank of Gunung Arjuno and extends to its eastern flank. Fumarolic areas with sulfur deposition occur at several locations on Gunung Welirang. · Foto: Anonymous, date unknown. · Wikimedia Commons
Tipo
Stratovulcano
Paese
Indonesia
Regione
Sunda-Banda Volcanic Regions / Sunda Volcanic Arc
Altitudine
3343 m
Coordinate
-7.733, 112.575
Ultima eruzione
1952
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The Arjuno and Welirang volcanoes anchor the SE and NW ends, respectively, of a 6-km-long line of volcanic cones and craters. The complex overlies most of the Gunung Ringgit edifice, whose summit is about 3 km NE from the main ridge. Pyroclastic cones are located on the north flank of Gunung Welirang and along an E-W line cutting across the southern side of Gunung Arjuno that extends to the lower SE flank. Fumarolic areas with sulfur deposition occur at several locations on Welirang.

Sintesi da Wikipedia

Riassunto in inglese

Mount Arjuno-Welirang is a stratovolcano in the province of East Java in Java, Indonesia. Mount Arjuno-Welirang lies about 50 kilometers south of Surabaya, and 20 kilometers north of Malang. It is a twin volcano, with the 'twins' being Arjuno and Welirang. There is at least one other stratovolcano in the area, and around 10 pyroclastic cones nearby. They are located in a 6 km line between Arjuno and Welirang. The Arjuno-Welirang volcanic complex itself lies in the older two volcanoes, Mount Ringgit to the east and Mount Linting to the south. The summit lacks vegetation. Fumarolic areas with sulfur deposits are found in several locations in Welirang.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1950~1954 · 2 eruzioni · VEI max. 21987~1991 · 1 eruzioni · VEI max. ?19501958197119791987

Cronologia dettagliata

  1. 1991VEI ?Stima geologica
    1991-09-13 – In corso
    Gunung Welirang
  2. 1952VEI 0Osservata
    1952-08-15 – In corso
    NW flank (Kawah Plupuh)
  3. 1950VEI 2Osservata
    1950-10-30 – In corso
    NW part of Gunung Welirang (2500 & 2700 m)

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.