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Coquihalla Mountain is an extinct
stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...
in
Similkameen Country The Similkameen Country, also referred to as the Similkameen Valley or Similkameen District, but generally referred to simply as The Similkameen or more archaically, Similkameen, is a region roughly coinciding with the basin of the river of the sam ...
, southwestern
British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...
,
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
, located south of Falls Lake and west of Tulameen between the Coquihalla and Tulameen rivers. With a
topographic prominence In topography, prominence (also referred to as autonomous height, relative height, and shoulder drop in US English, and drop or relative height in British English) measures the height of a mountain or hill's summit relative to the lowest contou ...
of , it towers above adjacent mountain ridges. It is the highest mountain in the
Bedded Range The Bedded Range is a mountain range in the Hozameen Range subdivision of the Canadian Cascades, which are the extension of the Cascade Range into British Columbia, Canada. Located between the Coquihalla and Tulameen Rivers, the Bedded Range is ...
of the northern
Canadian Cascades The North Cascades are a section of the Cascade Range of western North America. They span the border between the Canadian province of British Columbia and the U.S. state of Washington and are officially named in the U.S. and Canada as the Cascad ...
with an elevation of and lies near the physiographic boundaries with the
Coast Mountains The Coast Mountains (french: La chaîne Côtière) are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbia ...
on the west and the
Interior Plateau The Interior Plateau comprises a large region of the Interior of British Columbia, and lies between the Cariboo and Monashee Mountains on the east, and the Hazelton Mountains, Coast Mountains and Cascade Range on the west.''Landforms of British Co ...
on the east.


Geology

Coquihalla Mountain is a major preserved feature in the
Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
age
Pemberton Volcanic Belt The Pemberton Volcanic Belt is an eroded Oligocene-Miocene volcanic belt at a low angle near the Mount Meager massif, British Columbia, Canada. The Garibaldi and Pemberton volcanic belts appear to merge into a single belt, although the Pemberton ...
that was erupting about 21 to 22 million years ago.Character of volcanism, volcanic hazards, and risk, northern end of the Cascade magmatic arc, British Columbia and Washington State
/ref> Like the Pemberton Volcanic Belt, Coquihalla Mountain formed as result of Cascadia
subduction Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the ...
.


See also

* Jim Kelly Peak *
Volcanism of Canada Volcanic activity is a major part of the geology of Canada and is characterized by many types of volcanic landform, including lava flows, volcanic plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, submarine volcanoes, calder ...
*
Volcanism of Western Canada Volcanism of Western Canada has produced lava flows, lava plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, greenstone belts, submarine volcanoes, calderas, diatremes and maars, along with examples of more less common volcanic ...
*
List of volcanoes in Canada List of volcanoes in Canada is an incomplete list of volcanoes found in Mainland Canada, in the Canadian islands and in Canadian waters. All but one province, Prince Edward Island, have at least one volcano. Alberta British Columbia Ne ...
* Garibaldi Volcanic Belt


References


External links

* * * *
Geology of the Coquihalla Volcanic Complex, southwestern British Columbia
Volcanoes of British Columbia Two-thousanders of British Columbia Stratovolcanoes of Canada Pemberton Volcanic Belt Subduction volcanoes Extinct volcanoes Canadian Cascades Miocene stratovolcanoes Polygenetic volcanoes Yale Division Yale Land District {{BritishColumbia-geo-stub