Contact | souscrire Contribuer || English | Deutsch
Modifier & traduire
|partager
Cliquez ici pour recommander cette page à un ami

Guayaques volcan

lava domes 5598 m / 18,366 ft
Chile / Argentine (nord) + Bolivie, South America, -22.9°S / -67.57°W
Condition actuelle: en sommeil (1 sur 5)
Style éruptif tipique: effusif
Eruptions du volcan Guayaques: none in recent times ASTER satellite image of Guayaques and neighboring volcanoes, taken in 2003 (retrieved from: http://ava.jpl.nasa.gov/volcano.asp?vnum=1505-093)
Guayaques volcano is a group of lava domes in northern Chile on the border with Bolivia. The group of domes forms a 10 km long N-S trending chain and has fed thick, viscous lava flows extending up to about 3 km from the vents.
The youngest domes appear to be north of the summit crater of the dome complex and are less than 10,000 years old.

Introduction:

Cerros de Guayaques group of N-S-trending rhyodacitic lava domes straddles the Chile-Bolivia border. The 10-km-long chain is located immediately east of the Purico pyroclastic shield. There is some evidence for Holocene activity, and the youngest domes appear to be north of the summit crater of the dome complex (de Silva and Francis, 1991). A well-defined summit crater was the source of the largest lava flows, which traveled 3 km to the SW. There are no records of historical activity from Guayaques volcano.