Doña Juana
Dona Juana
Stratovulcano · Colombia · 4137 m
- Tipo
- Stratovulcano
- Paese
- Colombia
- Regione
- South America Volcanic Regions / Northern Andean Volcanic Arc
- Altitudine
- 4137 m
- Coordinate
- 1.500, -76.936
- Ultima eruzione
- 1906
- Contesto tettonico
- Subduction zone / Continental crust (> 25 km)
- Forma vulcanica
- Composite
- Roccia principale
- Andesite / Basaltic Andesite
Sintesi geologica
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.
Sintesi da Wikipedia
Riassunto in ingleseDoña Juana is a stratovolcano, located within the Doña Juana-Cascabel Volcanic Complex National Natural Park in Nariño, Colombia.
Wikipedia · CC BY-SA · Leggi l'articolo completo →
Storia delle eruzioni
Cronologia dettagliata
- 1897VEI 4Osservata1897-11-01 – 1906
- 2550 a.C. (±150 anni)VEI 4Stima geologicaBCE 2550 – In corsoNortheastern caldera
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.