Satah Mountain volcanic field

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.

Satah Mountain volcanic field
Satah Mountain volcanic field is located in British Columbia
Satah Mountain volcanic field
Satah Mountain volcanic field
Highest point
PeakSatah Mountain
Elevation1,921 m (6,302 ft)
Coordinates52°28′32.9″N 124°41′22.9″W / 52.475806°N 124.689694°W / 52.475806; -124.689694
Geography
LocationBritish Columbia, Canada
Geology
Volcanic beltAnahim Volcanic Belt

This volcanic chain is named after its highest volcano, Satah Mountain, 35 km (22 mi) northeast of Nimpo Lake.[1]

Geology

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Volcanic features in the Satah Mountain field include lava domes, cinder cones and lava flows. 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, argon-argon dating by Kuehn et al. (2015) found that the youngest SMVF feature was a 1.43 million year old plug of basaltic trachyandesite.[1][2]

Volcanic features

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All features listed in this table were derived from Kuehn et al. (2015)[2] except where noted.

Name Landform Rock type Age (Ma) Coordinates
- Erosional remnant Phonolite - 52°24.6′N 124°42.5′W / 52.4100°N 124.7083°W / 52.4100; -124.7083
- Eroded cone Basaltic trachyandesite 1.94 52°23.8′N 124°45.8′W / 52.3967°N 124.7633°W / 52.3967; -124.7633
- Eroded cone Trachyte - 52°22.5′N 124°34′W / 52.3750°N 124.567°W / 52.3750; -124.567
- Eroded cone Phonotephrite - 52°26.4′N 124°37.3′W / 52.4400°N 124.6217°W / 52.4400; -124.6217
- Eroded cone Trachyte 1.95 52°31.9′N 124°42.9′W / 52.5317°N 124.7150°W / 52.5317; -124.7150
- Eroded cone - - 52°32.3′N 124°45.1′W / 52.5383°N 124.7517°W / 52.5383; -124.7517
- Eroded cone - - 52°32.5′N 124°46.8′W / 52.5417°N 124.7800°W / 52.5417; -124.7800
- Eroded cone Trachyte 1.66 52°32.1′N 124°47.9′W / 52.5350°N 124.7983°W / 52.5350; -124.7983
- Eroded cone, lava flows Trachybasalt, trachyandesite,
trachyte
1.77 52°23.7′N 124°42′W / 52.3950°N 124.700°W / 52.3950; -124.700
- Cone Trachyte - 52°22.5′N 124°44.4′W / 52.3750°N 124.7400°W / 52.3750; -124.7400
- Plug Basaltic trachyandesite 1.43 52°20.4′N 124°40′W / 52.3400°N 124.667°W / 52.3400; -124.667
Jorgensen Hill Eroded cone Trachybasalt 2.21 52°16.6′N 124°29.1′W / 52.2767°N 124.4850°W / 52.2767; -124.4850
- Eroded dome? Trachyte - 52°30.6′N 124°42.1′W / 52.5100°N 124.7017°W / 52.5100; -124.7017
- Eroded dome? Trachyte - 52°26.4′N 124°42.6′W / 52.4400°N 124.7100°W / 52.4400; -124.7100
Mount Punkutlaenkut Polygenetic cone Trachyte 1.96 52°29.5′N 124°47.8′W / 52.4917°N 124.7967°W / 52.4917; -124.7967
Satah Mountain Polygenetic, complex cone Basaltic trachyandesite,
trachyandesite (benmoreite),
trachyte
1.83–1.77 52°28.5′N 124°41.4′W / 52.4750°N 124.6900°W / 52.4750; -124.6900
Sugarloaf Mountain Eroded cone Trachyte 2.18 52°16.4′N 124°48.2′W / 52.2733°N 124.8033°W / 52.2733; -124.8033
- Eroded dome Trachyte 1.74 52°25.7′N 124°42.4′W / 52.4283°N 124.7067°W / 52.4283; -124.7067
Turbo Lake Lava flow Trachybasalt - 52°18.9′N 124°48.2′W / 52.3150°N 124.8033°W / 52.3150; -124.8033
- Erosional remnant Phonolite - 52°29.6′N 124°43.5′W / 52.4933°N 124.7250°W / 52.4933; -124.7250
White Creek[1] Cone[1] - - 52°32′57″N 124°51′7″W / 52.54917°N 124.85194°W / 52.54917; -124.85194[1]
Holte Creek[1] Cone[1] - - 52°28′50″N 124°45′26″W / 52.48056°N 124.75722°W / 52.48056; -124.75722[1]

See also

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References

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  1. ^ a b c d e f g h i "Satah Mountain". Global Volcanism Program. Smithsonian Institution.
  2. ^ a b 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.