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. 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]

Satah Mountain volcanic field
Satah Mountain volcanic field
Highest point
Coordinates52°28′0″N 124°42′0″W
Geography
LocationBritish Columbia, Canada
Geology
Type of rockLava flows, cinder cones, lava domes
Volcanic beltAnahim Volcanic Belt

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

NameLandformRock typeAge (Ma)CoordinatesReference [2]
-Erosional remnantPhonolite-52°24′6″N 124°42′5″WBulletin of Volcanology
-Eroded coneBasaltic trachyandesite1.9452°23′8″N 124°45′8″WBulletin of Volcanology
-Eroded coneTrachyte-52°22′5″N 124°34′00″WBulletin of Volcanology
-Eroded conePhonotephrite-52°26′4″N 124°37′3″WBulletin of Volcanology
-Eroded coneTrachyte1.9552°31′9″N 124°42′9″WBulletin of Volcanology
-Eroded cone--52°32′3″N 124°45′1″WBulletin of Volcanology
-Eroded cone--52°32′5″N 124°46′8″WBulletin of Volcanology
-Eroded coneTrachyte1.6652°32′1″N 124°47′9″WBulletin of Volcanology
-Eroded cone, lava flowsTrachybasalt, trachyandesite,
trachyte
1.7752°23′7″N 124°42′00″WBulletin of Volcanology
-ConeTrachyte-52°22′5″N 124°44′4″WBulletin of Volcanology
-PlugBasaltic trachyandesite1.4352°20′4″N 124°40′00″WBulletin of Volcanology
Jorgensen HillEroded coneTrachybasalt2.2152°16′6″N 124°29′1″WBulletin of Volcanology
-Eroded dome?Trachyte-52°30′6″N 124°42′1″WBulletin of Volcanology
-Eroded dome?Trachyte-52°26′4″N 124°42′6″WBulletin of Volcanology
Mount PunkutlaenkutPolygenetic coneTrachyte1.9652°29′5″N 124°47′8″WBulletin of Volcanology
Satah MountainPolygenetic, complex coneBasaltic trachyandesite,
trachyandesite (benmoreite),
trachyte
1.83–1.7752°28′5″N 124°41′4″WBulletin of Volcanology
Sugarloaf MountainEroded coneTrachyte2.1852°16′4″N 124°48′2″WBulletin of Volcanology
-Eroded domeTrachyte1.7452°25′7″N 124°42′4″WBulletin of Volcanology
Turbo LakeLava flowTrachybasalt-52°18′9″N 124°48′2″WBulletin of Volcanology
-Erosional remnantPhonolite-52°29′6″N 124°43′5″WBulletin of Volcanology

See also

References

  1. "Satah Mountain". Global Volcanism Program. Smithsonian Institution.
  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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