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Canadá · Campo volcánico

Garibaldi Lake volcanic field

Garibaldi Lake

Tipo
Campo volcánico
Altitud
2316 m
Última erupción
Desconocido
Garibaldi Lake volcanic field
Foto: Seattle Skier (talk · contribs) · CC BY 2.5 · Wikimedia Commons
Tipo
Campo volcánico
País
Canadá
Región
América del Norte / Garibaldi Volcanic Arc
Altitud
2316 m
Coordenadas
49.933, -123.000
Última erupción
Desconocido
Contexto tectónico
Zona de subducción / Corteza continental (> 25 km)
Forma volcánica
Grupo volcánico
Roca principal
Andesita / Andesita basáltica
Resumen geológico

A group of nine small andesitic stratovolcanoes and basaltic andesite vents in the scenic Garibaldi Lake area immediately north of Mount Garibaldi was formed during the late Pleistocene and early Holocene. The oldest stratovolcano, The Black Tusk, formed between about 1.3 and 1.1 million years ago (Ma). Following glacial dissection, renewed volcanism (0.21-0.17 Ma) produced the lava dome and flow forming its summit. Other Pleistocene vents are located along and to the west of the Cheakamus River. The Cinder Cone, to the east of The Black Tusk, produced a 9-km-long lava flow during the late Pleistocene or early Holocene (0.04 +/- 0.04 Ma). Mount Price, west of Garibaldi Lake, was formed in three stages dating back to 1.1 million years, the latest of which produced two large lava flows from Clinker Peak during the early Holocene that ponded against the retreating continental ice sheet and formed the barrier containing Garibaldi Lake. The Table, a steep-sided subglacial tuya south of Garibaldi Lake, was also formed during the early Holocene.

Resumen de Wikipedia

Resumen en inglés

The Garibaldi Lake volcanic field is a volcanic field, located in British Columbia, Canada. It was formed by a group of nine small andesitic stratovolcanoes and basaltic andesite vents in the scenic Garibaldi Lake area immediately north of Mount Garibaldi during the late Pleistocene and early Holocene. The oldest stratovolcano, The Black Tusk, formed between about 1.3 and 1.1 million years ago (Ma). Following glacial dissection, renewed volcanism produced the lava dome and flow forming its summit. Other Pleistocene vents are located along and to the west of the Cheakamus River. Cinder Cone, to the east of The Black Tusk, produced a 9-km-long lava flow during the late Pleistocene or early Holocene.

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