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Volcán Maipo

Maipo

Caldera · Chile-Argentina · 5323 m

Maipo volcano, seen here from the west, partially fills the Pleistocene Diamante caldera. The floor of the large 15 x 20 km caldera, which formed about 0.45 million years ago during an eruption that produced a 450 cu km ignimbrite, is visible below Maipo. The 5264-m-high basaltic andesite stratovolcano has a relatively simple structure, but has a flank rhyodacitic lava-dome complex and pyroclastic cones on its eastern flank. Lava flows from these cones extend into Laguna Diamante on the eastern side of the caldera.
Maipo volcano, seen here from the west, partially fills the Pleistocene Diamante caldera. The floor of the large 15 x 20 km caldera, which formed about 0.45 million years ago during an eruption that produced a 450 cu km ignimbrite, is visible below Maipo. The 5264-m-high basaltic andesite stratovolcano has a relatively simple structure, but has a flank rhyodacitic lava-dome complex and pyroclastic cones on its eastern flank. Lava flows from these cones extend into Laguna Diamante on the eastern side of the caldera. · Foto: Photo by Wolfgang Foerster, courtesy of Oscar González-Ferrán (University of Chile). · Wikimedia Commons
Tipo
Caldera
Paese
Chile-Argentina
Regione
South America Volcanic Regions / Southern Andean Volcanic Arc
Altitudine
5323 m
Coordinate
-34.164, -69.832
Ultima eruzione
1912
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Trachyandesite / Basaltic Trachyandesite
Sintesi geologica

Maipo, a conical stratovolcano that straddles the Chile-Argentina border SE of Santiago, partially fills the 16 x 20 km Pleistocene Diamante caldera, which formed about 450,000 years ago during an eruption that produced an about 350 km3 of rhyolitic ignimbrite. The Pleistocene cones of Volcán Don Casimiro and Cerro Listado were formed on the SW rim and SW flank of the caldera, respectively. The post-caldera Maipo rises about 1,900 m above the caldera floor, and has several cones on the E flank along a series of en échelon NE-trending fractures. Lava flows from one of these cones blocked drainages in 1826 inside the caldera, forming Lake Diamante on the eastern caldera floor.

Sintesi da Wikipedia

Riassunto in inglese

Maipo is a stratovolcano in the Andes, lying on the border between Argentina and Chile. It is located 90 km (56 mi) south of Tupungato and about 100 km (62 mi) southeast of Santiago. It has a symmetrical, conical volcanic shape, and is among the southernmost 5,000 metre peaks in the Andes.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1788~1800 · 1 eruzioni · VEI max. ?1813~1825 · 1 eruzioni · VEI max. ?1825~1838 · 6 eruzioni · VEI max. 21862~1875 · 1 eruzioni · VEI max. 21875~1887 · 1 eruzioni · VEI max. ?1900~1912 · 3 eruzioni · VEI max. 217881813185018751900

Cronologia dettagliata

  1. 1912VEI 2Osservata
    1912 – In corso
  2. 1908VEI 2Stima geologica
    1908 – In corso
  3. 1905VEI 2Osservata
    1905-10-28 – 1905-10-30
  4. 1881VEI ?Stima geologica
    1881 – In corso
  5. 1869VEI 2Stima geologica
    1869-08-24 – In corso
  6. 1837VEI ?Stima geologica
    1837 – In corso
  7. 1835VEI ?Stima geologica
    1835 – In corso
  8. 1833VEI 2Stima geologica
    1833 – In corso
  9. 1831VEI 2Stima geologica
    1831-02-16 – In corso
  10. 1829VEI 2Osservata
    1829-09-26 – In corso
  11. 1826VEI 2Osservata
    1826-03-01 – In corso
    East flank (Riso Patrón)
  12. 1822VEI ?Stima geologica
    1822 – In corso
  13. 1788VEI ?Stima geologica
    1788 – In corso

Link esterni

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