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Silverthrone volcano

caldera 3160 m / 10,367 ft
Canada, 51.43°N / -126.3°W
Current status: dormant (1 out of 5)
Silverthrone volcano books
Typical eruption style: explosive and effusive
Silverthrone volcano eruptions: 12,200 ± 140 BP
TimeMag. / DepthDistanceLocation
Wed, 6 Sep
Wed, 6 Sep 17:11 UTCM 1.5 / 1 km44 km122 km ENE of Pt. Hardy,BC
Wed, 6 Sep 14:43 UTCM 1.4 / 1 km45 km124 km ENE of Pt. Hardy,BC
Silverthrone is a large volcanic complex with a 20 km wide dissected caldera located in SW British Columbia NW of the head of Knight Inlet, Canada.

Background:

The Silverthrone complex contains rhyolitic, dacitic and andesitic lava domes, flows and breccia. Most of the complex appears to have been erupted between 0.1 and 0.5 million years ago, but some andesitic and basaltic-andesite cones and lava flows seem to be younger than the ice age. A radiocarbon date from barnacles 8.5 km upstream from the mouth of Machmel River and buried by the flow yielded an age of 12,200 +/- 140 years. This is a maximum age for the flow, which could be much younger according to recent studies.
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Source: GVP volcano information


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