Doña Juana
Dona Juana
Stratovolkan · Colombia · 4137 m
- Tipe
- Stratovolkan
- Negara
- Colombia
- Wilayah
- South America Volcanic Regions / Northern Andean Volcanic Arc
- Ketinggian
- 4137 m
- Koordinat
- 1.500, -76.936
- Letusan terakhir
- 1906
- Kondisi tektonik
- Subduction zone / Continental crust (> 25 km)
- Bentuk lahan
- Composite
- Batuan utama
- Andesite / Basaltic Andesite
Ringkasan geologi
The forested Doña Juana stratovolcano contains two calderas, breached to the NE and SW. The summit of the andesitic-dacitic volcano is comprised of a series of post-caldera lava domes. The older caldera, open to the NE, formed during the mid-Holocene, accompanied by voluminous pyroclastic flows. The younger caldera contains the active central cone. The only historical activity took place during a long-term eruption from 1897-1906, when growth of a summit lava dome was accompanied by major pyroclastic flows.
Ringkasan Wikipedia
Ringkasan InggrisDoña Juana is a stratovolcano, located within the Doña Juana-Cascabel Volcanic Complex National Natural Park in Nariño, Colombia.
Wikipedia · CC BY-SA · Baca artikel lengkap →
Riwayat letusan
Garis waktu rinci
- 1897VEI 4Teramati1897-11-01 – 1906
- 2550 SM (±150 tahun)VEI 4Perkiraan geologiBCE 2550 – BerlangsungNortheastern caldera
Tautan eksternal
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