Everything about Rainbow Range Coast Mountains totally explained
The
Rainbow Range is a
mountain range in
British Columbia,
Canada, located northwest of
Anahim Lake. It is on the western edge of the
Chilcotin Plateau, adjoining the
Pacific Ranges of the
Coast Mountains to the south, and the
Kitimat Ranges of the Coast Mountains to the north. In some classification systems it's considered part of the Coast Mountains and has been assigned here in Wikipedia to the Pacific Ranges although it isn't formally part of that range-complex.
It lies north of the
Bella Coola and
Atnarko Rivers and south and west of the
Dean River, which curves around its north flank, and is relatively drier in climate and easier of terrain than more mountainous areas immediately west.
Geology
The Rainbow Range is an eight million year old (
Miocene) massive
peralkaline shield volcano in the
Anahim Volcanic Belt which includes the lower but similar
Itcha and
Ilgachuz Ranges. The shield has a diameter of is now heavily eroded by
glaciers carving into the
volcanic rock and
sands over millions of years. The volcanism that created the shield isn't well studied and is poorly understood. It is thought to be the result of the
North American Plate passing over a
hotspot, similar to the one feeding the
Hawaiian Islands, known as the
Anahim hotspot. Its main summit is the
volcanic cone of
Tsitsutl Peak and the only real separate volcanic peak associated with the Rainbow Range is
Anahim Peak which sits on its northeast flank. Other peaks in the range are other high eroded remnants of the shield, including
Beef Peak,
TaiaTaeszi Peak and
Mount MacKenzie. Like most volcanoes in British Columbia, it's part of the
Pacific Ring of Fire which includes over 160 active volcanoes.
The range gets its name from the intense and varied colours of its terrains' volcanic
lavas and sands from heavy
mineralization, like the
Spectrum Range in the
Spatsizi Plateau.
Tweedsmuir South Provincial Park
The Rainbow Range lies partly in the
Tweedsmuir South Provincial Park, while to its east the Itcha and Ilgachuz Ranges form the core of the
Itcha Ilgachuz Provincial Park.
Further Information
Get more info on 'Rainbow Range Coast Mountains'.
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