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Aliso volcanstratovolcan 4267 m / 13,999 ft
Équateur, -0.53°S / -78°W Condition actuelle: en sommeil (1 sur 5)
Style éruptif tipique: explosive, effusive (lava domes)
Eruptions du volcan Aliso: 2000 years ago (?), 2450 BC (?) Derniers séismes proches:
Introduction:from Smithsonian / GVP Aliso volcano information:The largely unexplored complex contains a curved summit ridge on the west with older andesitic lava flows and tundra-like vegetation, and rhyolitic and dacitic lava domes in a wet cloud-forest environment on the lower eastern flanks. The Pumayacu center on the SE flank contains several lava domes along a NNE axis parallel to the Andean Thrust Fault System (TFZ). Morphologically young andesitic lava flows occur along the flat-topped ridge above Baeza town. The Pumayacu center erupted pyroclastic-flow deposits of late Pleistocene and Holocene age. One pyroclastic-flow deposit was dated at about 4400 years Before Present, and a pumice lapilli layer overlies a ceramic-rich cultural horizon thought to be about 2000 years old |
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