Tuya Volcanic Field
Encyclopedia
The Tuya volcanic field is a volcanic field
of tuya
s located in far northern British Columbia
, Canada
, near the border with the Yukon
Territory and focussed on the area of the Tuya Range
, a subrange of the Stikine Ranges
of the Cassiar Mountains
, though some vents are in the Kawdy Plateau
, the northernmost part of the Stikine Plateau
. Several small shield volcano
es, and postglacial lapilli
cones and lava flows have been reported in this area. The only nonglacial volcanoes in the field are Gabrielse Cone
and the West Tuya lava field.
Volcanic field
A volcanic field is an area of the Earth's crust that is prone to localized volcanic activity. They usually contain 10 to 100 volcanoes, such as cinder cones and are usually in clusters. Lava flows may also occur...
of tuya
Tuya
A tuya is a type of distinctive, flat-topped, steep-sided volcano formed when lava erupts through a thick glacier or ice sheet. They are somewhat rare worldwide, being confined to regions which were covered by glaciers and also had active volcanism during the same time period.-Formation:Tuyas are...
s located in far northern 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...
, near the border with the Yukon
Yukon
Yukon is the westernmost and smallest of Canada's three federal territories. It was named after the Yukon River. The word Yukon means "Great River" in Gwich’in....
Territory and focussed on the area of the Tuya Range
Tuya Range
The Tuya Range is a range of tuyas, located in the Stikine Ranges of the Cassiar Mountains in the far northr of the Canadian province of British Columbia, near its border with the Yukon Territory and to the southwest of Watson Lake, Yukon, which is the nearest major settlement.-Boundaries and...
, a subrange of the Stikine Ranges
Stikine Ranges
The Stikine Ranges are a mountain range in northwestern British Columbia, Canada. They are the northernmost subdivision of the Cassiar Mountains and among the least explored and most undeveloped parts of the province.-Sub-ranges:*Beady Range...
of the Cassiar Mountains
Cassiar Mountains
The Cassiar Mountains are the most northerly group of the Northern Interior Mountains in the Canadian province of British Columbia and the Yukon Territory. They lie north and west of the Omineca Mountains, west of the northernmost Rockies and the Rocky Mountain Trench, north of the Hazelton...
, though some vents are in the Kawdy Plateau
Kawdy Plateau
The Kawdy Plateau is a plateau in northern British Columbia, Canada, located between the Nahlin and Tuya Rivers. It includes the granitic Atsutla Range and Nazcha Hills and the volcanic Kawdy Mountain.-References:* in the Canadian Mountain Encyclopedia....
, the northernmost part of the Stikine Plateau
Stikine Plateau
The Stikine Plateau is a plateau in northern British Columbia, Canada. It lies between the Boundary Ranges of the Coast Mountains on the west and southwest and the Cassiar Mountains along its northeast, and between the Skeena Mountains on its south and southeast and the Jennings and Nakina Rivers...
. Several small shield volcano
Shield volcano
A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes...
es, and postglacial lapilli
Lapilli
Lapilli is a size classification term for tephra, which is material that falls out of the air during a volcanic eruption or during some meteorite impacts. Lapilli means "little stones" in Latin. They are in some senses similar to ooids or pisoids in calcareous sediments.By definition lapilli range...
cones and lava flows have been reported in this area. The only nonglacial volcanoes in the field are Gabrielse Cone
Gabrielse Cone
Gabrielse Cone is a remarkably fresh, clearly postglacial monogenetic cinder cone, located in the Tuya Volcanic Field in British Columbia, Canada. It is about in diameter and has a central crater about deep. It is Holocene in age and to its northeast appears to be breached with the remnants of a...
and the West Tuya lava field.
Volcanoes
Volcanoes within the field include:- Ash MountainAsh Mountain (British Columbia)Ash Mountain is the highest summit in the Tuya Range of the Stikine Ranges in northcentral British Columbia, Canada, located immediately north of High Tuya Lake at the north end of Tuya Mountains Provincial Park. It is one of the six tuyas clustered close to Tuya Lake...
- Blackfly Tuya
- Caribou TuyaCaribou TuyaCaribou Tuya is a basaltic subglacial mound in far northwestern British Columbia that began eruptive activity under glacial ice during the Fraser glaciation . Like Ash Mountain and South Tuya, sections of the subglacial mound reveal a consistent stratigraphic progression from pillow lavas to...
- Cottonwood PeakCottonwood PeakCottonwood Peak is a mountain in northwestern British Columbia, Canada, located in the Iverson Creek area. It is a volcanic feature of the Northern Cordilleran Volcanic Province that formed in the past 1.6 million years during the Pleistocene Epoch.-See also:...
- Gabrielse ConeGabrielse ConeGabrielse Cone is a remarkably fresh, clearly postglacial monogenetic cinder cone, located in the Tuya Volcanic Field in British Columbia, Canada. It is about in diameter and has a central crater about deep. It is Holocene in age and to its northeast appears to be breached with the remnants of a...
- Grizzly ButteGrizzly ButteGrizzly Butte small shield volcano located in northwestern British Columbia, Canada. It is Holocene in age and stands in relief above the surrounding area north of the Nazcha Creek and comprises the West Tuya lava field with West Vent and Volcano Vent...
- Mount JosephineMount Josephine (British Columbia)Mount Josephine is a subglacial mound in the Tuya Range in British Columbia, Canada. It is located near the northwestern shore of Tuya Lake.-See also:* Northern Cordilleran Volcanic Province* Tuya Range* List of Northern Cordilleran volcanoes...
- Klinkit Creek PeakKlinkit Creek PeakKlinkit Creek Peak is a tuya in northwestern British Columbia, Canada, located near Klinkit Lake. It lies in the Northern Cordilleran Volcanic Province and last erupted during the Pleistocene epoch.-See also:*List of volcanoes in Canada...
- Mathews TuyaMathews TuyaMathews Tuya is a subglacial mound in northcentral British Columbia. It is one of the six tuyas close to Tuya Lake. It has been partly glaciated so it is probably older than 10,000 years. The other volcanoes in the area include Tuya Butte, South Tuya and Ash Mountain...
- Nome Lake South
- South TuyaSouth TuyaSouth Tuya, also called Southern Tuya, is a tuya clustered around Tuya Lake in the Northern Cordilleran Volcanic Province in British Columbia, Canada...
- Toozaza PeakToozaza PeakToozaza 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'...
- Tuya ButteTuya ButteTuya Butte is a tuya in the Tuya Range of north-central British Columbia, Canada. It is a bit less isolated from other ranges than neighbouring Mount Josephine...
- Volcano VentVolcano VentVolcano Vent is a small shield volcano in northern British Columbia, Canada. It is Holocene in age and stands in relief above the surrounding area north of the Nazcha Creek and comprises the West Tuya lava field with West Vent and Grizzly Butte. It is one of the three small shield volcanoes in the...
- West VentWest VentWest Vent is one of the three small shield volcanoes located in the Tuya Volcanic Field of the Northern Cordilleran Volcanic Province, British Columbia, Canada...
See also
- List of volcanoes in Canada
- Northern Cordilleran Volcanic ProvinceNorthern Cordilleran volcanic provinceThe Northern Cordilleran Volcanic Province , 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...
- Volcanism in CanadaVolcanism in CanadaVolcanism of Canada has produced 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...