Satah Mountain volcanic field
Template:Geobox 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 | Bulletin of Volcanology |
| - | Eroded cone | Basaltic trachyandesite | 1.94 | 52°23′8″N 124°45′8″W / 52.38556°N 124.75222°W | Bulletin of Volcanology |
| - | Eroded cone | Trachyte | - | 52°22′5″N 124°34′00″W / 52.36806°N 124.56667°W | Bulletin of Volcanology |
| - | Eroded cone | Phonotephrite | - | 52°26′4″N 124°37′3″W / 52.43444°N 124.61750°W | Bulletin of Volcanology |
| - | Eroded cone | Trachyte | 1.95 | 52°31′9″N 124°42′9″W / 52.51917°N 124.70250°W | Bulletin of Volcanology |
| - | Eroded cone | - | - | 52°32′3″N 124°45′1″W / 52.53417°N 124.75028°W | Bulletin of Volcanology |
| - | Eroded cone | - | - | 52°32′5″N 124°46′8″W / 52.53472°N 124.76889°W | Bulletin of Volcanology |
| - | Eroded cone | Trachyte | 1.66 | 52°32′1″N 124°47′9″W / 52.53361°N 124.78583°W | 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 | Bulletin of Volcanology |
| - | Cone | Trachyte | - | 52°22′5″N 124°44′4″W / 52.36806°N 124.73444°W | Bulletin of Volcanology |
| - | Plug | Basaltic trachyandesite | 1.43 | 52°20′4″N 124°40′00″W / 52.33444°N 124.66667°W | Bulletin of Volcanology |
| Jorgensen Hill | Eroded cone | Trachybasalt | 2.21 | 52°16′6″N 124°29′1″W / 52.26833°N 124.48361°W | Bulletin of Volcanology |
| - | Eroded dome? | Trachyte | - | 52°30′6″N 124°42′1″W / 52.50167°N 124.70028°W | Bulletin of Volcanology |
| - | Eroded dome? | Trachyte | - | 52°26′4″N 124°42′6″W / 52.43444°N 124.70167°W | Bulletin of Volcanology |
| Mount Punkutlaenkut | Polygenetic cone | Trachyte | 1.96 | 52°29′5″N 124°47′8″W / 52.48472°N 124.78556°W | 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 | Bulletin of Volcanology |
| Sugarloaf Mountain | Eroded cone | Trachyte | 2.18 | 52°16′4″N 124°48′2″W / 52.26778°N 124.80056°W | Bulletin of Volcanology |
| - | Eroded dome | Trachyte | 1.74 | 52°25′7″N 124°42′4″W / 52.41861°N 124.70111°W | Bulletin of Volcanology |
| Turbo Lake | Lava flow | Trachybasalt | - | 52°18′9″N 124°48′2″W / 52.30250°N 124.80056°W | Bulletin of Volcanology |
| - | Erosional remnant | Phonolite | - | 52°29′6″N 124°43′5″W / 52.48500°N 124.71806°W | Bulletin of Volcanology |
See also
References
- ^ a b c "Satah Mountain". Global Volcanism Program. Smithsonian Institution.
- ^ 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.