Canada · Pyroclastic cone
Nazko Cone
Nazko
- Type
- Pyroclastic cone
- Elevation
- 1238m
- Last eruption
- -5220
- Type
- Pyroclastic cone
- Country
- Canada
- Region
- North America / Interior Western Canada Volcanic Province
- Elevation
- 1238m
- Coordinates
- 52.928, -123.732
- Last eruption
- -5220
- Tectonic setting
- Intraplate / Continental crust (> 25 km)
- Landform
- Minor (basaltic)
- Major rock type
- Trachybasalt / Tephrite basanite
Geological summary
Nazko Cone, the easternmost and youngest volcano of the Anahim Volcanic Belt in the Chilcotin-Nechako Plateau, central British Columbia, rests on glacial till. It was formed in three episodes of activity, the first of which took place during a Pleistocene interglacial stage about 340,000 years ago (Souther et al., 1987). The second stage produced a large hyaloclastite scoria mound erupted beneath the Cordilleran ice sheet during the late Pleistocene. The final activity occurred about 7,200 years ago, forming a compound subaerial basanitic cinder cone that overtopped the hyaloclastite mound and produced two small lava flows that traveled about 1 km W. An airfall tephra deposit extends several kilometers to the N and E. Mining of the red cinder and scoria deposits began in the early 1990s.
From Wikipedia
Nazko Cone is a small potentially active basaltic cinder cone in central British Columbia, Canada, located 75 km west of Quesnel and 150 kilometers southwest of Prince George. It is considered the easternmost volcano in the Anahim Volcanic Belt. The small tree-covered cone rises 120 m above the Chilcotin-Nechako Plateau and rests on glacial till. It was formed in three episodes of activity, the first of which took place during the Pleistocene interglacial stage about 340,000 years ago. The second stage produced a large hyaloclastite scoria mound erupted beneath the Cordilleran Ice Sheet during the Pleistocene. Its last eruption produced two small lava flows that traveled 1 km to the west, along with a blanket of volcanic ash that extends several km to the north and east of the cone.
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Eruption history
1 recordedGlossaryDetailed timeline
- 5220 BCE (±100 yrs)VEI ?Geological estimate5220 BCE – end unknown
Nearby volcanoes
- Silverthrone CalderaCaldera · 226 km away
- Bridge River ConesVolcanic field · 238 km away
- Mount MeagerComplex volcano · 256 km away
- Wells Gray-Clearwater volcanic fieldVolcanic field · 265 km away
- Mount Cayley volcanic fieldVolcanic field · 314 km away
- Garibaldi Lake volcanic fieldVolcanic field · 337 km away
External links
⚠ For reference only. Not for emergency response.