Search results
Results from the WOW.Com Content Network
The volcanic history of the Northern Cordilleran Volcanic Province presents a record of volcanic activity in northwestern British Columbia, central Yukon and the U.S. state of easternmost Alaska. The volcanic activity lies in the northern part of the Western Cordillera of the Pacific Northwest region of North America .
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.
Tseax Cone is one of the southernmost volcanoes in the Northern Cordilleran Volcanic Province. [10] This is a broad area of shield volcanoes , lava domes , cinder cones and stratovolcanoes extending from northwestern British Columbia northwards through Yukon into easternmost Alaska . [ 28 ]
Second Canyon Cone, also called Canyon Creek Cone is a cinder cone in the Boundary Ranges of the Coast Mountains in northwestern British Columbia, Canada.It is a volcanic feature of the Iskut-Unuk River Cones which is part of the Northern Cordilleran Volcanic Province and formed in the past 10,000 years of the Holocene epoch.
Chikoida Mountain is a volcanic feature of the Northern Cordilleran Volcanic Province that formed in the past 66.4 million years of the Cenozoic era. [ 3 ] See also
Maitland Volcano was one of the most voluminous shield volcanoes in the Northern Cordilleran Volcanic Province along with Heart Peaks, Level Mountain and the Mount Edziza volcanic complex. [1] Its structure was about 50 km (31 mi) long and 40 km (25 mi) wide, covering an area of at least 1,000 km 2 (390 sq mi).