Chilcotin Group-North

sopka (bez známé erupce za posledních ~12 000 let), Canada, North America Volcanic Regions

Kde

Canada, North America Volcanic Regions

Typ (GVP)

Volcanic field

Nadmořská výška

1 800 m

Poloha

51,450°, -122,330°

The Chilcotin basalts form an extensive series of flat-lying lava flows of Miocene to Pleistocene age covering the interior of British Columbia (Mathews, 1989). The flow remnants form eroded volcanic outcrops that appear to have been erupted from now-eroded coalescing small shield volcanoes scattered throughout the intermontane region. Most flows are 5-10 m thick, but locally are up to 200 m where they filled palaeovalleys. In some instances thick sequences of pillows are found, while in other localities they form a thin veneer under glacial drift. These basalts are listed here in two groups--a northern group in the Chilcotin Plateau area, and a southern group in the Thompson Plateau. Eroded outcrops of Pleistocene age of the northern Chilcotin group are found at Alixton Creek, Big Bar, Browns Lake, Crows Bar, Dog Creek, Prentice Gulch, and Thaddeus Lake (Hickson et al., 1994).

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.