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Volcán Azufral

Azufral

성층화산 · Colombia · 4070m

Azufral stratovolcano in southern Colombia, seen here from the SE, is also known as Azufral de Túquerres. It is truncated by a 2.5 x 3 km caldera containing a Holocene lava dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. The last known eruption of Azufral volcano took place about 1000 years ago.
Azufral stratovolcano in southern Colombia, seen here from the SE, is also known as Azufral de Túquerres. It is truncated by a 2.5 x 3 km caldera containing a Holocene lava dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. The last known eruption of Azufral volcano took place about 1000 years ago. · 사진: Photo by Norm Banks, 1989 (U.S. Geological Survey). · Wikimedia Commons
화산 유형
성층화산
국가
Colombia
지역
South America Volcanic Regions / Northern Andean Volcanic Arc
해발
4070m
좌표
1.080, -77.680
마지막 분화
-930년
판구조 환경
Subduction zone / Continental crust (> 25 km)
화산 지형
Composite
주요 암석
Dacite
지질학적 요약

Azufral stratovolcano in southern Colombia, also known as Azufral de Túquerres, is truncated by a 2.5 x 3 km caldera containing a Holocene rhyodacitic lava-dome complex. A crescent-shaped lake, Laguna Verde, occupies the NW side of the caldera. Nearly a dozen lava domes are present, the latest of which were formed about 3600 years ago and have active fumaroles. Azufral rocks are more silicic than those of nearby Colombian volcanoes; an apron of rhyodacitic pyroclastic-flow deposits rings the volcano. The last known eruption took place about 1000 years ago.

Wikipedia 요약

영어 요약

Azufral is a stratovolcano located in the department of Nariño in southern Colombia, 12 km (7 mi) west of the town of Túquerres. It is the only volcano of the Western Ranges of the Colombian Andes. Its name derives from the Spanish word for sulfur, azufre. The volcano is considered semi-dormant but there are numerous fumaroles in the summit crater. The summit of the volcano has an altitude of 4,070 metres (13,350 ft), and the north-western side of the crater contains a crescent-shaped lake named Laguna Verde at 3,970 m (13,025 ft). The lake is 1,100 m (0.68 mi) long and 600 metres (2,000 ft) wide. and its bright green color is a result of the sulfur and iron-based deposits in the crater. There are also two other much smaller lakes in the crater, Laguna Negra and Laguna Cristal.

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분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
2095 BCE~1978 BCE · 1건 · 최고 VEI ?1862 BCE~1745 BCE · 1건 · 최고 VEI ?1745 BCE~1629 BCE · 1건 · 최고 VEI ?1046 BCE~930 BCE · 1건 · 최고 VEI 42095 BCE1862 BCE1512 BCE1279 BCE1046 BCE

상세 타임라인

  1. 기원전 930년VEI 4지질학적 추정
    BCE 930 ~ 진행 중
  2. 기원전 1650년 (±150년)VEI ?지질학적 추정
    BCE 1650 ~ 진행 중
  3. 기원전 1850년VEI ?지질학적 추정
    BCE 1850 ~ 진행 중
  4. 기원전 2095년 (±100년)VEI ?지질학적 추정
    BCE 2095 ~ 진행 중

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