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Chilcotin Group-South volcano

Volcanic field 2100 m / 6890 ft
Canada, 50.15°N / -119.62°W
Current status: (probably) extinct (0 out of 5) | Reports
Chilcotin Group-South volcano books
Typical eruption style: unspecified
Chilcotin Group-South volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene) No recent earthquakes
TimeMag. / DepthDistanceLocation


The southern part of the Miocene to Pleistocene Chicotin basalts forming an extensive series of basaltic lava flows covering much of the Thompson Plateau and Okanagan Highland in the interior of southern British Columbia are referred to as the Chilcotin Group-South. These basalts are tectonically and petrologically similar to the Chilcotin basalts to the NW, listed separately in this compilation. The Chicoltin basalts appear to have been erupted from discrete centers, no longer preserved, and form scattered outcrops of thin basaltic flows that are locally thick where they fill palaeovalleys. Five areas of Recent volcanic deposits are mapped north of Princeton and SE of Merritt (Church and McAdam, 1983). Two Potassium-Argon dates of 0.04 million years ago have been obtained on these rocks (Hickson, in Wood and Kienle, 1990), and the Chilcotin basalts are considered to be no younger than late Pleistocene (Hickson et al. 1994). Eroded volcanic outcrops of Pleistocene age in the southern Chilcotin group are found at Kelowna, Lambley Creek, Missezula Lake, Nicola (Chester), Quilchena Creek, and West Kettle River (Hickson et al., 1994).
Source: Smithsonian / GVP volcano information

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