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Lava fountains can occur in the Northern Cordilleran Volcanic Province roughly every 100 years. [10] Level Mountain, the largest volcano of the Northern Cordilleran Volcanic Province. The large brown area in the middle is a dissected stratovolcano and the surrounding light brown is the broad shield volcano comprising a lava plateau.
The Northern Cordilleran Volcanic Province has been a zone of active volcanism since it began to form 20 million years ago. Unlike other parts of the Pacific Ring of Fire, the Northern Cordilleran Volcanic Province has its origins in continental rifting—an area where the Earth's crust and lithosphere is being pulled apart. [4]
Over half of the Northern Cordilleran volcanoes are located in northwestern British Columbia. This portion is where the most recent eruptions in Canada and of the Northern Cordilleran Volcanic Province have occurred, including the catastrophic 18th century eruption of Tseax Cone and the 1904 eruption of The Volcano. [3] [16]
The eruption rate of the MEVC has varied throughout its long volcanic history. When the volcanic complex started erupting at least 7.4 million years ago, it increased the rate of magmatism in the Northern Cordilleran Volcanic Province from 100,000 to 300,000 cubic metres (3,500,000 to 10,600,000 cubic feet) per year.
With an area of about 275 km 2 (106 sq mi) and a volume of less than 160 km 3 (38 cu mi), Heart Peaks is the third-largest volcano in the Northern Cordilleran Volcanic Province, exceeded by the Mount Edziza and Level Mountain shields, which cover more than 1,000 km 2 (390 sq mi). [3]
The Northern Cordilleran Volcanic Province of northwestern British Columbia, also called the Stikine Volcanic Belt, is the most active volcanic region in Canada. [66] It comprises a large number of small cinder cones and associated lava plains, and three large, compositionally diverse volcanoes, known as the Level Mountain , the Mount Edziza ...
Volcanic history of the Northern Cordilleran Volcanic Province; References This page was last edited on 25 September 2023, at 05:02 (UTC). Text is available ...
Volcanic history of the Northern Cordilleran Volcanic Province; A. Alligator Lake volcanic complex; Anderson Bay; Ash Mountain (British Columbia) Atlin Volcanic Field; B.