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The Northern Cordilleran Volcanic Province (NCVP), formerly known as the Stikine Volcanic Belt, is a geologic province defined by the occurrence of Miocene to Holocene volcanoes in the Pacific Northwest of North America. This belt of volcanoes extends roughly north-northwest from northwestern British Columbia and the Alaska Panhandle through Yukon to the Southeast Fairbanks Census Area of far eastern Alaska, in a corridor hundreds of kilometres wide. It is the most recently defined volcanic province in the Western Cordillera. It has formed due to extensional cracking of the North American continent—similar to other on-land extensional volcanic zones, including the Basin and Range Province and the East African Rift. Although taking its name from the Western Cordillera, this term is a geologic grouping rather than a geographic one. The southmost part of the NCVP has more, and larger, volcanoes than does the rest of the NCVP; further north it is less clearly delineated, describing a large arch that sways westward through central Yukon.
Hoodoo Mountain is a potentially active flat-topped stratovolcano in the Stikine Country of northwestern British Columbia, Canada, located 74 km (46 mi) northeast of Wrangell, Alaska, on the north side of the lower Iskut River and 30 km (19 mi) east of its junction with the Stikine River. It is situated in the Boundary Ranges of the Coast Mountains and existed since the Late Pleistocene stage of the Pleistocene epoch, which began 130,000 years ago and ended 10,000 years ago.
Heart Peaks, originally known as the Heart Mountains, is a mountain massif in the Northern Interior of British Columbia, Canada. It is 90 km (56 mi) northwest of the small community of Telegraph Creek and just southwest of Callison Ranch. With a maximum elevation of 2,012 m (6,601 ft), it rises above the surrounding landscape on the Nahlin Plateau, which is part of the western Stikine Plateau. Heart Peaks has been an area of prospecting since the 1980s with the discovery of precious metals.
Kawdy Mountain is a subglacial mound on the Kawdy Plateau, the northernmost sub-plateau of the Stikine Plateau in northwestern British Columbia, Canada. It consists of nearly horizontal beds of basaltic lava, capping outward dipping beds of fragmental volcanic rocks and last erupted in Pleistocene. Kawdy Mountain is one of many basaltic volcanic features of the Stikine Volcanic Belt, which is forming because the North American tectonic plate is stretching slightly as it moves to the west.
Crow Lagoon is a little-known volcanic center located north of Prince Rupert, British Columbia, Canada. There are beds of thick, basaltic tephra that are of Holocene age.
Toozaza Peak is a tuya in the Stikine Ranges of the Cassiar Mountains in northern British Columbia, Canada, located in the Iverson Creek. Toozaza Peak is the summit of a north–south aligned ridge between the head of Toozaza Creek and the head of the Jennings River, just south of the Jennings' divide with the Little Rancheria River headwaters. The Little Rancheria and Toozaza Creek are part of the Liard, while the Jennings is part of the Yukon River drainage via Teslin Lake, and the peak therefore stands astride the line of the Continental Divide. It is part of the Tuya Volcanic Field, a volcanic field associated with the Stikine Volcanic Belt, part of the Northern Cordilleran Volcanic Province.
Castle Rock is a volcanic plug located 13 km (8 mi) west of Iskut and 8 km (5 mi) northwest of Tuktsayda Mountain in British Columbia, Canada. Castle Rock is part of the Pacific Ring of Fire that includes over 160 active volcanoes and is in the Klastline Group, Northern Cordilleran Volcanic Province and last erupted in the Pleistocene.
Wetalth Ridge is an isolated ridge in northern British Columbia, Canada, located 74 km (46 mi) southwest of Tatogga and south of Telegraph Creek. It lies on the southwest side of Little Arctic Lake at the southwest corner of Mount Edziza Provincial Park.
Dark Mountain, formerly also known as Black Mountain, is a mountain in the Tanzilla Plateau of the Northern Interior of British Columbia, Canada, located northeast of the settlement of Dease Lake, near Cry Lake.
Meehaz Mountain is a mountain in the Cassiar Country of the Northern Interior of British Columbia, Canada, located on the north side of the headwaters of Teslin River and to the south of the Atsutla Range. It is a product of subglacial volcanism during the Pleistocene period when this area was covered by thick glacial ice, forming a subglacial volcano that never broke through the overlying glacial ice known as a subglacial mound.
Nuthinaw Mountain is a mountain on the Stikine Plateau in northern British Columbia, Canada, located east of Tutsingale Mountain and 72 km (45 mi) northwest of Dease Lake on the north side of Tachilta Lakes. It is a product of subglacial volcanism during the Pleistocene period when this area was covered by thick glacial ice, forming a subglacial volcano that never broke through the overlying glacial ice known as a subglacial mound.
Tutsingle Mountain is a mountain on the Stikine Plateau in northern British Columbia, Canada, located east of Nuthinaw Mountain and northwest of Dease Lake on the northeast side of the Tachilta Lakes. It is a product of subglacial volcanism during the Pleistocene period when this area was covered by thick glacial ice, forming a subglacial volcano that never broke through the overlying glacial ice known as a subglacial mound.
Chikoida Mountain is a mountain on the Taku Plateau in northwestern British Columbia, Canada, located 52 km (32 mi) southeast of Atlin on the east side of the Silver Salmon River.
Round Mountain is a mountain in northwestern British Columbia, Canada, located 22 km (14 mi) east of Dease Lake.
Little Eagle Cone is a subglacial mound in northwestern British Columbia, Canada, located in the Dark Mountain area. It last erupted during the Pleistocene epoch.
The Volcano, also known as Lava Fork volcano, is a small cinder cone in the Boundary Ranges of the Coast Mountains in northwestern British Columbia, Canada. It is located approximately 60 km (40 mi) northwest of the small community of Stewart near the head of Lava Fork. With a summit elevation of 1,656 m (5,433 ft) and a topographic prominence of 311 m (1,020 ft), it rises above the surrounding rugged landscape on a remote mountain ridge that represents the northern flank of a glaciated U-shaped valley.
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. Extensional cracking of the North American Plate in this part of North America has existed for millions of years. Continuation of this continental rifting has fed scores of volcanoes throughout the Northern Cordilleran Volcanic Province over at least the past 20 million years and occasionally continued into geologically recent times.
The Finlay tephras are two tephra deposits in northern British Columbia, Canada. They take their name from the Finley River and were deposited just before 10,220-10,560 years ago. The source for the two tephra deposits is unknown but were likely erupted during two closely spaced periods of volcanism at one or two volcanoes associated with the Northern Cordilleran Volcanic Province. Volcanoes suggested to have erupted the tephras include Hoodoo Mountain, Heart Peaks, the Mount Edziza volcanic complex and Level Mountain.
