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Ceboruco

Stratovolcano · Mexico · 2280m

Volcán Ceboruco is a small, but complex stratovolcano with two concentric summit calderas. The thick lava flow (center) on the western flank was emplaced during an eruption in 1870-75. Eruption of the rhyodacite Jala Pumice formed the initial 4-km-wide caldera about 1,000 years ago. The second caldera was associated with partial collapse of the large Dos Equis dacite lava dome, which partly filled the earlier caldera. About 15 scoria cones and lava flows are across the flanks.
Volcán Ceboruco is a small, but complex stratovolcano with two concentric summit calderas. The thick lava flow (center) on the western flank was emplaced during an eruption in 1870-75. Eruption of the rhyodacite Jala Pumice formed the initial 4-km-wide caldera about 1,000 years ago. The second caldera was associated with partial collapse of the large Dos Equis dacite lava dome, which partly filled the earlier caldera. About 15 scoria cones and lava flows are across the flanks. · Photo: Photo by Jim Luhr, 1980 (Smithsonian Institution). · Wikimedia Commons
Type
Stratovolcano
Country
Mexico
Region
Middle America-Caribbean Volcanic Regions / Trans-Mexican Volcanic Arc
Elevation
2280m
Coordinates
21.125, -104.508
Last eruption
1875
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Volcán Ceboruco is the only volcano in the NW part of the Mexican Volcanic Belt with observed eruptions. The complex stratovolcano rises above the floor of the Tepic graben and is truncated by two concentric summit calderas. Eruption of the voluminous rhyodacitic Jala Pumice formed the initial 4-km-wide caldera about 1,000 years ago. The second caldera, 1.5 km wide, was formed by collapse of part of the large Dos Equis dacitic lava dome, which partly filled the earlier caldera. About 15 basaltic and andesitic cinder cones and lava flows have erupted along a NW-SE-trending line cutting across Ceboruco. The massive, sparsely vegetated El Norte lava flow, probably erupted in the past few hundred years, covers the entire N flank. The last eruption took place during 1870-1875 CE. Explosive eruptions from a vent on the upper W flank accompanied extrusion of a 1.1 km3 dacitic lava flow that covers a large area on the lower W flank.

From Wikipedia

Ceboruco is a dacitic stratovolcano located in Nayarit, Mexico, northwest of the Trans-Mexican Volcanic Belt. The largest eruption, the Jala Plinian eruption, was around 930 AD ±200, VEI 6, releasing 11 cubic kilometres (2.6 cu mi) of tephra. The most recent and best documented eruption from Ceboruco lasted from 1870–1875, with fumarole activity lasting well into the 20th century. The mountain features one large caldera, created during the Jala eruption, with a smaller crater nested inside that formed when the Dos Equis lava dome collapsed during the Coapales eruption around 1100 AD. Within both of these craters, are several explosive volcanic features, including scoria deposits, lava domes, and pyroclastic domes, or cinder cone volcanoes.

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Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
930~1024 · 1 eruptions · max VEI 61494~1588 · 2 eruptions · max VEI ?1776~1870 · 1 eruptions · max VEI 39301118140015881776

Detailed timeline

  1. 1870VEI 3Observed
    1870-02-21 – 1875
    Upper west flank
  2. 1567VEI ?Observed
    1567 – Ongoing
  3. 1542VEI ?Observed
    1542 – Ongoing
  4. 930 (±200 yrs)VEI 6Geological estimate
    930 – Ongoing

External links

⚠ For reference only. Not for emergency response.