Gambier Group
Encyclopedia
The Gambier Group is an Early Cretaceous
aged geologic group in the southern Coast Mountains
of British Columbia
, Canada
. It was formed on the easternmost point of the Wrangellia Terrane
as a volcanic arc
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.
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...
aged geologic group in the southern Coast Mountains
Coast Mountains
The Coast Mountains 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. They are so-named because of their proximity to the sea coast, and are often...
of British Columbia
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
. It was formed on the easternmost point of the Wrangellia Terrane
Wrangellia Terrane
The Wrangellia Terrane is a geologic concept encompassing a large arc of terrain extending from the U.S state of southcentral Alaska through southwestern Yukon and along the Coast of British Columbia in Canada...
as a volcanic arc
Volcanic arc
A volcanic arc is a chain of volcanoes positioned in an arc shape as seen from above. Offshore volcanoes form islands, resulting in a volcanic island arc. Generally they result from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench...
about 100 million years ago along a west-to southwest-dipping subduction zone
Subduction
In geology, subduction is the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate, sinking into the Earth's mantle, as the plates converge. These 3D regions of mantle downwellings are known as "Subduction Zones"...
. This prehistoric volcanic arc is generally referred to as the Gambier arc or Gambier volcanic arc.
See also
- Volcanism of Western CanadaVolcanism of Western CanadaVolcanism of Western Canada produces lava flows, lava plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, submarine volcanoes, calderas, diatremes and maars, along with examples of more less common volcanic forms such as tuyas and subglacial mounds.-Volcanic belts:*Anahim...
- Flute SummitFlute Summit (British Columbia)Flute Summit is a flat-topped 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 Provincial Park...
- Piccolo SummitPiccolo SummitPiccolo 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 Provincial Park...
- Whistler MountainWhistler MountainWhistler 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 ski resort and the town of Whistler, British Columbia.The original name of the mountain...