Atlin volcan

Mise à jour: 17 août. 2022 20:47 GMT - Refresh
cinder cones 1880 m / 6,168 ft
Canada, 59.68°N / -133.32°W
Condition actuelle: normal / en sommeil (1 sur 5)

Atlin is a group of young cinder cones and lava flows on the Teslin Plateau east of Lake Atlin in western British Columbia, Canada. The largest cone is 1880-m-high Ruby Mountain (named for the brilliantly colored tephra deposits), which has been partially eroded by glaciation.

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Style éruptif tipique: Explosive
Eruptions du volcan Atlin: 1898 (uncertain), several 1000 years ago
Derniers séismes proches: No recent earthquakes

Introduction

The Atlin volcanic field comprises the following areas:

Surprise Lake volcanic field
Volcanic Creek, Cracker Creek, Ruby Mountain, and Ruby Creek. The vents and their deposits are well preserved. The 2 basaltic cinder cones at the heads of Cracker and Volcanic Creeks are probably younger than 10,000 years.

Mount Llangorse volcanic field
The Llangorse volcanic field is approximately 144 km2 large and located 55 km southeast of Atlin. Vents include Hirschfeld, Fire Mountain, Lone Point, Chikoida Mountain, and Llangorse Mountain.

Anderson / Moose Bay
This field has 2 eruptive centers on the SE shore of Lake Atlin. Its eruptions occurred 16 million years ago.

Uncertain eruption in 1898
Placer miners working in the region at the end of the 19th century reported an eruption from the Ruby Mountain area about 80 km south of Gladys Lake. Ashfall was reported for several days and the miners were able to work at nights due to incandescent glow from the eruption. However, no field evidence has been found for a historical eruption, and the report is considered highly uncertain.

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Sources:
GVP Atlin volcanic field information
"Llangorse volcanic field, British Columbia", Harder, M; Russell, J K; Anderson, R G; Edwards, B R; Geological Survey of Canada, Current Research no. 2003-A6, 2003

(Edwards et al., 1996). (Hickson et al., 1994; Edwards et al., 1996)


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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