Unknown volcano(es) in the Northern Cordilleran Volcanic Province
Date
10,220-10,560 years ago
Type
Tephra deposits
Location
British Columbia, Canada
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.[1] Volcanoes suggested to have erupted the tephras include Hoodoo Mountain, Heart Peaks, the Mount Edziza volcanic complex and Level Mountain.[1]
^ ab"Holocene tephras in lake cores from northern British Columbia, Canada" (PDF). Archived from the original (PDF) on 2011-07-18. Retrieved 2010-07-12.
The Finlaytephras are two tephra deposits in northern British Columbia, Canada. They take their name from the Finley River and were deposited just before...
have a similar chemistry to the glass composition of the Finlaytephras. However, no tephras or pyroclastic rocks have been found at Hoodoo Mountain that...
form of rare microphenocrysts. It is compositionally distinct from the Finlaytephras which may have originated from Level Mountain, Hoodoo Mountain, Heart...
the Finlaytephras. These are two 5-to-10-millimetre-thick (0.20-to-0.39-inch) phonolitic to trachytic tephra layers in the Dease Lake and Finlay River...
the mountain. Two tephra deposits, collectively known as the Finlaytephras, occur in organic-rich mud in the Dease Lake and Finlay River areas. They...
24 km (15 mi) wide. Its flat-topped summit is made of weakly consolidated tephra and consists of two terraces. The lowest terrace is about 230 m (750 ft)...
Global Information