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Garibaldi Lake volcanic field

Garibaldi Lake

Medan gunung api · Canada · 2316 m

The Garibaldi Lake volcanic field consists of nine small stratovolcanoes and vents of Pleistocene to Holocene age around Garibaldi Lake, seen here with Mount Garibaldi in the background. Mount Price, in the center of the photo, is a small andesitic stratovolcano. Clinker Peak on the west flank produced two Holocene lava flows that dammed Rubble Creek at the right-hand margin of this photo, forming Garibaldi Lake.
The Garibaldi Lake volcanic field consists of nine small stratovolcanoes and vents of Pleistocene to Holocene age around Garibaldi Lake, seen here with Mount Garibaldi in the background. Mount Price, in the center of the photo, is a small andesitic stratovolcano. Clinker Peak on the west flank produced two Holocene lava flows that dammed Rubble Creek at the right-hand margin of this photo, forming Garibaldi Lake. · Foto: Photo by Lee Siebert, 1983 (Smithsonian Institution). · Wikimedia Commons
Tipe
Medan gunung api
Negara
Canada
Wilayah
North America Volcanic Regions / Garibaldi Volcanic Arc
Ketinggian
2316 m
Koordinat
49.933, -123.000
Letusan terakhir
Tidak diketahui
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Cluster
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

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