Satah Mountain volcanic field

Satah Mountain volcanic field
Country Canada
Province British Columbia
Part of Anahim Volcanic Belt
Highest point Satah Mountain
 - elevation 1,921 m (6,302 ft)
 - coordinates 52°28′0″N 124°42′0″W / 52.46667°N 124.70000°W / 52.46667; -124.70000
Geology Lava flows, cinder cones, lava domes
Period Pleistocene

The Satah Mountain volcanic field (SMVF) is an extensive north-south trending volcanic chain in the Central Interior of British Columbia that stretches south of the Itcha Range shield volcano to northeast of Nimpo Lake. The chain is located on the Chilcotin Plateau, a major subdivision of the Interior Plateau that includes other nearby volcanic features. It forms a segment of the east-west trending Anahim Volcanic Belt, whose volcanic activity ranges in age from Miocene-to-Holocene. Volcanic features in the Satah Mountain field include lava domes, cinder cones and lava flows. Its name originates from Satah Mountain, the highest volcano, located 35 km (22 mi) northeast of Nimpo Lake.[1]

Lava domes and flows are composed of trachyte and the cinder cones consist of basaltic and trachybasaltic lava. The most recently formed cone is well preserved and might have a similar age to the 7,200‑year‑old Nazko Cone at the easternmost end of the Anahim Volcanic Belt.[1] However, recent (2015) argon-argon dating by Kuehn et al. found that the youngest SMVF feature was a 1.43 million year old plug of basaltic trachyandesite.[1][2]

Volcanic features

Name Landform Rock type Age (Ma) Coordinates Reference [2]
- Erosional remnant Phonolite - 52°24′6″N 124°42′5″W / 52.40167°N 124.70139°W / 52.40167; -124.70139 Bulletin of Volcanology
- Eroded cone Basaltic trachyandesite 1.94 52°23′8″N 124°45′8″W / 52.38556°N 124.75222°W / 52.38556; -124.75222 Bulletin of Volcanology
- Eroded cone Trachyte - 52°22′5″N 124°34′00″W / 52.36806°N 124.56667°W / 52.36806; -124.56667 Bulletin of Volcanology
- Eroded cone Phonotephrite - 52°26′4″N 124°37′3″W / 52.43444°N 124.61750°W / 52.43444; -124.61750 Bulletin of Volcanology
- Eroded cone Trachyte 1.95 52°31′9″N 124°42′9″W / 52.51917°N 124.70250°W / 52.51917; -124.70250 Bulletin of Volcanology
- Eroded cone - - 52°32′3″N 124°45′1″W / 52.53417°N 124.75028°W / 52.53417; -124.75028 Bulletin of Volcanology
- Eroded cone - - 52°32′5″N 124°46′8″W / 52.53472°N 124.76889°W / 52.53472; -124.76889 Bulletin of Volcanology
- Eroded cone Trachyte 1.66 52°32′1″N 124°47′9″W / 52.53361°N 124.78583°W / 52.53361; -124.78583 Bulletin of Volcanology
- Eroded cone, lava flows Trachybasalt, trachyandesite,
trachyte 		1.77 52°23′7″N 124°42′00″W / 52.38528°N 124.70000°W / 52.38528; -124.70000 Bulletin of Volcanology
- Cone Trachyte - 52°22′5″N 124°44′4″W / 52.36806°N 124.73444°W / 52.36806; -124.73444 Bulletin of Volcanology
- Plug Basaltic trachyandesite 1.43 52°20′4″N 124°40′00″W / 52.33444°N 124.66667°W / 52.33444; -124.66667 Bulletin of Volcanology
Jorgensen Hill Eroded cone Trachybasalt 2.21 52°16′6″N 124°29′1″W / 52.26833°N 124.48361°W / 52.26833; -124.48361 Bulletin of Volcanology
- Eroded dome? Trachyte - 52°30′6″N 124°42′1″W / 52.50167°N 124.70028°W / 52.50167; -124.70028 Bulletin of Volcanology
- Eroded dome? Trachyte - 52°26′4″N 124°42′6″W / 52.43444°N 124.70167°W / 52.43444; -124.70167 Bulletin of Volcanology
Mount Punkutlaenkut Polygenetic cone Trachyte 1.96 52°29′5″N 124°47′8″W / 52.48472°N 124.78556°W / 52.48472; -124.78556 Bulletin of Volcanology
Satah Mountain Polygenetic, complex cone Basaltic trachyandesite,
trachyandesite (benmoreite),
trachyte 		1.83–1.77 52°28′5″N 124°41′4″W / 52.46806°N 124.68444°W / 52.46806; -124.68444 Bulletin of Volcanology
Sugarloaf Mountain Eroded cone Trachyte 2.18 52°16′4″N 124°48′2″W / 52.26778°N 124.80056°W / 52.26778; -124.80056 Bulletin of Volcanology
- Eroded dome Trachyte 1.74 52°25′7″N 124°42′4″W / 52.41861°N 124.70111°W / 52.41861; -124.70111 Bulletin of Volcanology
Turbo Lake Lava flow Trachybasalt - 52°18′9″N 124°48′2″W / 52.30250°N 124.80056°W / 52.30250; -124.80056 Bulletin of Volcanology
- Erosional remnant Phonolite - 52°29′6″N 124°43′5″W / 52.48500°N 124.71806°W / 52.48500; -124.71806 Bulletin of Volcanology

See also

References

  1. 1 2 3 "Satah Mountain". Global Volcanism Program. Smithsonian Institution.
  2. 1 2 Kuehn, Christian; Guest, Bernard; K. Russell, James; A. Benowitz, Jeff (2015). "The Satah Mountain and Baldface Mountain volcanic fields: Pleistocene hot spot volcanism in the Anahim Volcanic Belt, west-central British Columbia, Canada". Bulletin of Volcanology. Springer: 8, 9.
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