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Volcán Cerro Machín

Machin

Stratovulcano · Colombia · 2749 m

Two central lava domes of Cerro Machín volcano are seen here from the SW. A 3-km-wide caldera, whose rim is the horizontal change in slope across the center of the photo, opens towards the south. Late-Holocene eruptions produced block-and-ash flows that traveled to the west and south, beyond the caldera. Deposits from some of these eruptions form the eroded slopes in the lower part of the photo along the valley of the Toche River.
Two central lava domes of Cerro Machín volcano are seen here from the SW. A 3-km-wide caldera, whose rim is the horizontal change in slope across the center of the photo, opens towards the south. Late-Holocene eruptions produced block-and-ash flows that traveled to the west and south, beyond the caldera. Deposits from some of these eruptions form the eroded slopes in the lower part of the photo along the valley of the Toche River. · Foto: Photo by José Macías, 1996 (Universidad Autómona de México). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Colombia
Regione
South America Volcanic Regions / Northern Andean Volcanic Arc
Altitudine
2749 m
Coordinate
4.487, -75.389
Ultima eruzione
1180
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Dacite
Sintesi geologica

The small Cerro Machín stratovolcano lies at the southern end of the Ruiz-Tolima massif about 20 km WNW of the city of Ibagué. A 3-km-wide caldera is breached to the south and contains three forested dacitic lava domes. Voluminous pyroclastic flows traveled up to 40 km away during eruptions in the mid-to-late Holocene, perhaps associated with formation of the caldera. Late-Holocene eruptions produced dacitic block-and-ash flows that traveled through the breach in the caldera rim to the west and south. The latest known eruption of took place about 800 years ago.

Sintesi da Wikipedia

Riassunto in inglese

Cerro Machín is a stratovolcano located in Tolima Department, Colombia. Considered the most dangerous active volcano of Colombia, Cerro Machin is a volcanic plug that is approximately the same age as the Ruiz-Tolima Massif and has the appearance of being part of that volcanic system.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
3800 BCE~3601 BCE · 1 eruzioni · VEI max. ?2804 BCE~2605 BCE · 1 eruzioni · VEI max. ?2406 BCE~2206 BCE · 1 eruzioni · VEI max. ?2206 BCE~2007 BCE · 1 eruzioni · VEI max. ?812 BCE~613 BCE · 1 eruzioni · VEI max. ?582~782 · 1 eruzioni · VEI max. ?981~1180 · 1 eruzioni · VEI max. ?3800 BCE2605 BCE1410 BCE214 BCE981

Cronologia dettagliata

  1. 1180 (±150 anni)VEI ?Stima geologica
    1180 – In corso
  2. 750VEI ?Stima geologica
    750 – In corso
  3. 650 a.C.VEI ?Stima geologica
    BCE 650 – In corso
  4. 2100 a.C. (±200 anni)VEI ?Stima geologica
    BCE 2100 – In corso
  5. 2240 a.C. (±300 anni)VEI ?Stima geologica
    BCE 2240 – In corso
  6. 2650 a.C.VEI ?Stima geologica
    BCE 2650 – In corso
  7. 3800 a.C. (±150 anni)VEI ?Stima geologica
    BCE 3800 – In corso

Link esterni

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