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Illiniza

Iliniza

Stratovulcano · Ecuador · 5162 m

The twin peaks of Illiniza volcano form prominent landmarks west of the Interandean Valley. Sharp-peaked, snow-covered Illiniza Sur (right) is the higher of the two peaks. It is seen here from the south with Illiniza Norte to its left. Illiniza is largely, if not entirely Pleistocene in age. However, Rasuyacu lava dome on the south flank was active during the Holocene. Recent work suggests that Illiniza itself, which is substantially eroded, may have had relatively young eruptions.
The twin peaks of Illiniza volcano form prominent landmarks west of the Interandean Valley. Sharp-peaked, snow-covered Illiniza Sur (right) is the higher of the two peaks. It is seen here from the south with Illiniza Norte to its left. Illiniza is largely, if not entirely Pleistocene in age. However, Rasuyacu lava dome on the south flank was active during the Holocene. Recent work suggests that Illiniza itself, which is substantially eroded, may have had relatively young eruptions. · Foto: Photo by Lee Siebert, 1978 (Smithsonian Institution). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Ecuador
Regione
South America Volcanic Regions / Northern Andean Volcanic Arc
Altitudine
5162 m
Coordinate
-0.662, -78.716
Ultima eruzione
Sconosciuto
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The two glacier-covered peaks of Iliniza volcano are prominent landmarks west of the Interandean Valley. The smaller Iliniza Norte is a remnant of the main volcanic edifice located 1.8 km NNW of the younger Iliniza Sur, an andesitic-dacitic stratovolcano surrounded by thick pyroclastic-flow deposits. The edifice is mainly Pleistocene, though the Tishigcuchi (Rasuyacu) lava dome on the S flank was active during the Holocene. Iliniza itself, which is substantially eroded, may also have had relatively young eruptions (Hall, 1987, pers. comm.). A lava dome forms the summit of Iliniza Sur, and two more lava domes are found on the southern and NE flanks of the complex.

Sintesi da Wikipedia

L'Illiniza è uno stratovulcano dell'Ecuador, situato 55 km a sud-ovest della capitale ecuadoriana Quito. L'Illiniza è un vulcano potenzialmente attivo, e consta di due picchi principali: Illiniza Sur e Illiniza Nord. Il suo nome deriva delle parole kunza che significa "colle maschio".

Wikipedia · CC BY-SA · Leggi l'articolo completo →

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