Devastator Peak
From Wikipedia, the free encyclopedia
Devastator Peak | |
---|---|
Elevation | 2,327 metres (7,635 feet) |
Location | British Columbia, Canada |
Range | Pacific Ranges |
Prominence | 67 m |
Coordinates | |
Topo map | NTS 92J/12 |
Type | Volcanic neck |
Age of rock | Pliocene |
Last eruption | Pleistocene |
First ascent | 1931 N. Carter; A. Dalgleish; T. Fyles; M. Winram |
Devastator Peak, sometimes called The Devastator, is the lowest of the six volcanic peaks of Mount Meager in Squamish-Lillooet Regional District, British Columbia, in the Pacific Northwest region of Canada. It is a dissected andesitic volcanic neck, located 55 km west of Bralorne and is part of the Pacific Ring of Fire that includes over 160 active volcanoes. Devastator Peak was the source for a thick sequence of andesite lava flows that occurred 0.5-1.0 million years ago. Because the slopes of Devastator Peak are so unstable, there have been many recent debris flows and consist of weak, hydrothermally altered felsic rocks.
[edit] Geology
Devastator Peak is a member in the chain of multiple volcanic peaks that run from southwestern British Columbia to northern California. The peaks formed in the past 35 million years as the Juan de Fuca Plate and the Explorer Plate to its west have been subducting under the North American Plate, known as the Cascade Volcanic Belt. As the oceanic crust of the Juan de Fuca Plate and the Explorer Plate melts under the pressure, it creates pools of lava that drive up the Pacific Ranges and Cascade Range and power periodic eruptions in there volcanic peaks, although many mistakenly believe it to be part of the Cascade Range (it is a member of the Cascade Volcanic Belt, but not of the Cascade Range).