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Chachimbiro volcano

stratovolcano 4106 m / 13,471 ft
Ecuador, 0.47°N / -78.29°W
Current status: dormant (1 out of 5)
Chachimbiro volcano books
Typical eruption style: explosive
Chachimbiro volcano eruptions: 3740 BC (?)
TimeMag. / DepthDistanceLocation
Sat, 16 Sep
Sat, 16 Sep 19:15 UTCM 2.9 / 23 km5 km COLOMBIA-ECUADOR BORDER REGION
Chachimbiro volcano is a large volcanic complex 25 km NW of the city of Ibarra in northern Ecuador.
There are no historic eruptions. The most recent activity took place from the Pitzantzi lava dome and produced a wide-spread ash deposit that extends NW.

Background:

From Smithsonian / GVP volcano information:
Late Pleistocene collapse of the andesitic Huanguillaro stratovolcano produced a 6.8 cu km debris-avalanche deposit and a 4-km-wide avalanche caldera open to the east that has largely been filled by lava domes, including the rhyodacitic Hugá lava dome. The avalanche deposit is overlain by three large ignimbrites and pyroclastic-flow deposits related to dome growth. The late Pleistocene-to-Holocene, NNE-trending dacitic Chachimbiro-Pucará line of lava domes includes the Pitzantzi lava dome, which erupted about 5700 years ago, producing an ash deposit that extends to the NW. Hot springs and thermal areas are present at the Chachimbiro complex.


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