Leon, Cerro del

sopka (bez známé erupce za posledních ~12 000 let), Chile, South America Volcanic Regions

Kde

Chile, South America Volcanic Regions

Typ (GVP)

Stratovolcano(es)

Nadmořská výška

5 754 m

Poloha

-22,142°, -68,108°

Cerro del León is an andesitic stratovolcano 40 km SE of the San Pedro-San Pablo volcanoes. It is flanked by two massive dacitic lava domes, 2.6 km3 Chillahuita to the SE and 26 km3 Chao to the NW, in the saddle between Cerro del Leon and Paniri volcanoes. González-Ferrán (1995) considered León to be of Pleistocene-Holocene age. The massive Chao lava dome and flow is the world's largest of its type. The 14.5-km-long dacitic lava flow has distal margins that are 350-400 m high and dramatic 30-m-high flow ridges on its surface. The age of the flows was considered to be post-glacial (Guest 1981, pers. comm.), but Argon-Argon dates indicate only that it is less than 100,000 years old (de Silva and Francis, 1991), and based on comparison with nearby dated flows, it was considered to be of Pleistocene age (de Silva, 2007 pers. comm.). The eruption of less than 1 km3 of dacitic pyroclastic flows preceded the initial lava extrusion, which formed the 22 km3 compound main flow. Eruption of a small amount of rhyolitic airfall and growth of a pumice cone was followed by effusion of the final 3 km3 of lava.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.