Catalogue of Canadian volcanoes |
Proactive disclosure Print version | | Natural Resources Canada > Earth Sciences Sector > Priorities > Strong and safe communities > Volcanoes of Canada
Catalogue of Canadian volcanoes Chilcotin Plateau basalts
A zone of small-volume basaltic lava flow eruptions about 150 km inland
fromand running parallel to the Garibaldi volcanic belt. Activity
in this area is thought to be a result of extension of the crust behind the
coastal subduction zone, a common phenomenon worldwide termed "back-arc
extension volcanism". Chilcotin eruptions happened mainly 6-10 million
years ago and 2-3 million years ago in the early stages of Garibaldi belt
activity. In addition there have been a few eruptions in the Pleistocene
(0.01 to 1.6 million years ago). The volcano maps show only the Chilcotin
eruptions that are Pliocene and younger (younger than 5.3 million years).
|