Ekuador · Gunung api perisai
Cerro Azul
Azul, Cerro
- Tipe
- Gunung api perisai
- Ketinggian
- 1640 m
- Letusan terakhir
- 2008
- Tipe
- Gunung api perisai
- Negara
- Ekuador
- Wilayah
- Pasifik Timur / Galapagos Hotspot Volcano Group
- Ketinggian
- 1640 m
- Koordinat
- -0.920, -91.408
- Letusan terakhir
- 2008
- Kondisi tektonik
- Zona rift / Kerak samudra (< 15 km)
- Bentuk lahan
- Perisai
- Batuan utama
- Basal / Pikrobasal
Ringkasan geologi
Located at the SW tip of the J-shaped Isabela Island, Cerro Azul contains a steep-walled 4 x 5 km nested summit caldera complex that is one of the smallest diameter, but at 650 m one of the deepest in the Galápagos Islands. The shield volcano is the second highest of the archipelago. A conspicuous bench occupies the SW and west sides of the caldera, which formed during several episodes of collapse. Youthful lava flows cover much of the caldera floor, which has also contained ephemeral lakes. A prominent tuff cone located at the ENE side of the caldera is evidence of episodic hydrovolcanism. Numerous spatter cones dot the western flanks. Fresh-looking lava flows, many erupted from circumferential fissures, descend the NE and NW flanks. Historical eruptions date back only to 1932, but Cerro Azul has been one of the most active Galápagos volcanoes since that time. Solfataric activity continues within the caldera.
Ringkasan Wikipedia
Ringkasan InggrisCerro Azul is a shield volcano on the south western part of Isabela Island in the Galápagos Islands. At a height of 1,689 m (5,541 ft) it is the second highest peak in the Galapagos and due to its topographic prominence of over 1,500 m (4,921 ft) it is categorised as an ultra. The volcano is one of the most active in the Galapagos, with the last eruption between May and June 2008.
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Riwayat letusan
15 tercatatGlosariumGaris waktu rinci
- 2008VEI 1Teramati2008-05-29 – 2008-06-17Summit and SE flank
- 1998VEI 1Teramati1998-09-15 – 1998-10-21N & W caldera floor, SE flank (630-680 m)
- 1979VEI 2Teramati1979-01-29 – 1979-03-04East flank (300 m) and summit
- 1968VEI ?Metode tidak dinyatakan1968-06-12 – akhir tidak diketahuiNorth flank?
- 1959VEI 2Teramati1959-06-29 – 1959-07-31East flank
- 1951VEI ?Teramati1951-07-02 – akhir tidak diketahui
- 1949VEI 0Teramati1949-07-02 – akhir tidak diketahui
- 1948VEI 0Teramati1948-06-30 – akhir tidak diketahui
- 1943VEI 3Teramati1943-04-13 – 1943-05-11Caldera ring fracture
- 1940VEI 0Teramati1940-07-02 – akhir tidak diketahuiEast flank (Cerro de Las Animas)
- 1932VEI 1Teramati1932-07-02 – akhir tidak diketahui
- 1850VEI ?Perkiraan geologi1850-07-02 – akhir tidak diketahui
- 1250VEI 0Perkiraan geologi1250 – akhir tidak diketahui
- 550 SM (±1300 tahun)VEI 0Perkiraan geologi550 SM – akhir tidak diketahui
- 950 SM (±900 tahun)VEI 0Perkiraan geologi950 SM – akhir tidak diketahui
Gunung api terdekat
Tautan eksternal
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