The Gambier Group is an
Early Cretaceous
The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma.
Geology
Pro ...
aged geologic group in the southern
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 ...
of
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 ...
. It was formed on the easternmost point of the
Wrangellia Terrane as a
volcanic arc
A volcanic arc (also known as a magmatic arc) is a belt of volcanoes formed above a subducting oceanic tectonic plate,
with the belt arranged in an arc shape as seen from above. Volcanic arcs typically parallel an oceanic trench, with the arc lo ...
about 100 million years ago along a west-to southwest-dipping
subduction zone.
This prehistoric volcanic arc is generally referred to as the Gambier arc or Gambier volcanic arc.
See also
*
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 v ...
*
Flute Summit
*
Piccolo Summit
Piccolo Summit is a summit in the Fitzsimmons Range of the Garibaldi Ranges of the Pacific Ranges in southwestern British Columbia, Canada. It is located on the north side of Cheakamus Lake just southeast of the town of Whistler in Garibaldi P ...
*
Whistler Mountain
Whistler Mountain is a mountain in the Fitzsimmons Range of the Pacific Ranges of the Coast Mountains, located on the northwestern edge of Garibaldi Provincial Park. It is the location of the Whistler-Blackcomb, Whistler-Blackcomb ski resort an ...
References
Volcanism of British Columbia
Cretaceous volcanism
Volcanic arcs
Volcanic groups
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