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Kolombia · Stratovolkan

Volcán Azufral

Azufral

Tipe
Stratovolkan
Ketinggian
4070 m
Letusan terakhir
-930
Volcán Azufral
Public domain · Wikimedia Commons
Tipe
Stratovolkan
Negara
Kolombia
Wilayah
Amerika Selatan / Northern Andean Volcanic Arc
Ketinggian
4070 m
Koordinat
1.080, -77.680
Letusan terakhir
-930
Kondisi tektonik
Zona subduksi / Kerak benua (> 25 km)
Bentuk lahan
Komposit
Batuan utama
Dasit
Ringkasan geologi

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.

Ringkasan Wikipedia

Ringkasan Inggris

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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Riwayat letusan

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Ringkasan (VEI dari waktu ke waktu)
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2095 SM~1978 SM · 1 letusan · VEI maks. ?1862 SM~1745 SM · 1 letusan · VEI maks. ?1745 SM~1629 SM · 1 letusan · VEI maks. ?1046 SM~930 SM · 1 letusan · VEI maks. 42095 SM1862 SM1512 SM1279 SM1046 SM

Garis waktu rinci

  1. 930 SMVEI 4Perkiraan geologi
    930 SM – akhir tidak diketahui
  2. 1650 SM (±150 tahun)VEI ?Perkiraan geologi
    1650 SM – akhir tidak diketahui
  3. 1850 SMVEI ?Perkiraan geologi
    1850 SM – akhir tidak diketahui
  4. 2095 SM (±100 tahun)VEI ?Perkiraan geologi
    2095 SM – akhir tidak diketahui

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