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Soche

성층화산 · Ecuador · 3955m

Volcán el Soche is a small volcano near the Ecuador-Colombia border and is seen in the center of this December 2017 Planet Labs satellite image monthly mosaic (N is at the top; this image is approximately 9.5 km across). Soche is the northernmost of a chain of Ecuadorian volcanoes east of the principal volcanic axis and was the source of a major explosive eruption during the early Holocene.
Volcán el Soche is a small volcano near the Ecuador-Colombia border and is seen in the center of this December 2017 Planet Labs satellite image monthly mosaic (N is at the top; this image is approximately 9.5 km across). Soche is the northernmost of a chain of Ecuadorian volcanoes east of the principal volcanic axis and was the source of a major explosive eruption during the early Holocene. · 사진: Satellite image courtesy of Planet Labs Inc., 2018 (https://www.planet.com/).
화산 유형
성층화산
국가
Ecuador
지역
South America Volcanic Regions / Northern Andean Volcanic Arc
해발
3955m
좌표
0.552, -77.580
마지막 분화
-6650년
판구조 환경
Subduction zone / Continental crust (> 25 km)
화산 지형
Composite
주요 암석
Dacite
지질학적 요약

Volcán el Soche, a small stratovolcano near the Colombia border, is the northernmost of a chain of Ecuadorian volcanoes east of the principal volcanic axis. This dominantly dacitic volcano was constructed over Paleozoic rocks and has a summit caldera open to the E. A major explosive eruption took place during the early Holocene at about 8600 years BP, depositing tephra NW into Colombia. The ejection of voluminous dacitic airfall pumice and pyroclastic flows was followed by the formation of two lava domes in the caldera.

Wikipedia 요약

영어 요약

Soche is a 3,955-metre-high (12,976 ft) dacitic volcano in Ecuador and is located on the northern end of a secondary volcanic chain. Constructed on a Paleozoic substratum, it contains an eastwards-opening caldera in the summit region. A large eruption in 6650 BCE generated ashfall into Colombia and two lava domes in the caldera. The ash- and lapilli-fall is about a metre thick in the Interandean valley and the neighbouring cordilleras and most likely represented a long-lasting obstacle for human population. Earlier eruptive events involving a lava flow that was subsequently offset by a fault zone named the Cayambe-Chingual fault by 110m occurred 9.67 ka BP, and another involving a pyroclastic flow was dated at 37.22 ± 0.63 ka BP.

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분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
6650 BCE~6650 BCE · 1건 · 최고 VEI 56650 BCE6650 BCE6649 BCE6649 BCE6649 BCE

상세 타임라인

  1. 기원전 6650년VEI 5지질학적 추정
    BCE 6650 ~ 진행 중

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