Taunshits

Taunshits (Russian: Тауншиц) is a stratovolcano located in the eastern part of Kamchatka Peninsula, Russia.

Taunshits
Highest point
Elevation2,301 m (7,549 ft) [1]
Prominence1,550 m (5,090 ft) [2]
ListingUltra
Coordinates54°31′42″N 159°48′15″E [2]
Geography
Taunshits
Russia
LocationKamchatka, Russia
Parent rangeEastern Range
Geology
Mountain typeStratovolcano
Last eruption550 BCE[1]

It is part of the Kamchatka-Kurile volcanic arc, and volcanism in this arc is caused by the subduction of the Pacific Plate beneath the Okhotsk Plate.[3] More specifically, volcanic activity at Taunshits relates to a local system of eastward-trending faults, and some additional volcanoes are controlled by the same fault system,[4] such as Uzon and Kikhpinych[5] which lie both east of Taunshits.[6]

Taunshits is a somma volcano and features lava flows, and its summit is formed by a ridge.[7] The stratovolcano contains a collapse crater formed during the Holocene, as well as a lava dome;[8] a viscous lava flow was erupted in the crater and extends down the western flank.[1] Erosion has formed gullies in the slopes of the volcano.[9] Two satellite vents and several cinder cones are found south of the edifice.[1]

Taunshits has principally erupted andesite[10] and basaltic andesite,[8] and its eruption products are calc-alkaline with moderate potassium content.[11] Volcanic activity at Taunshits involves the formation of lava domes and pyroclastic flows, similar to Bezymyanny or Shiveluch,[10] but widespread andesitic lava effusion has also occurred at the lower levels of the edifice.[12]

Activity at Taunshits commenced late during the Pleistocene,[13][12] less than 39,000 years before present considering that the ignimbrites generated by the Uzon eruption are found beneath lava flows from the volcano.[14] The Pleistocene activity constructed the foot of the volcano, which has tuya characteristics.[15]

Activity decreased during the Holocene.[16] 7,700 years before present, a major eruption ejected about 3 cubic kilometres (0.72 cu mi) of material;[17] it may have been preceded by the sector collapse.[15] 7,000 years before present, a sector collapse occurred, leaving a hummocky landscape around the volcano; no eruption occurred according to some sources,[18] while others believe that one took place.[15] The landslide extends over a length of 17 kilometres (11 mi) and has a volume of less than 1 cubic kilometre (0.24 cu mi);[19] other sources assume a volume of 3 cubic kilometres (0.72 cu mi) and a length of 19 kilometres (12 mi). The landslide occurred on the western slope of the volcano;[15] Taunshits developed on the western slope of Uzon volcano and the resulting westward tilt of its basement may have predisposed the edifice towards collapsing westward.[20] The landslide is responsible for the formation of the collapse crater on the summit.[1]

Lava flows were extruded about 2,500 years before present,[21] and 2,400 years before present the lava dome in the crater was emplaced; this event was accompanied by pyroclastic flows.[15] The last eruption occurred around 550 BCE;[1] As of 2012, no seismic station is located at Taunshits, which hampers the monitoring of activity at this volcano.[22] Solfataric activity occurs close to the edifice.[7]

See also

References
  1. "Taunshits". Global Volcanism Program. Smithsonian Institution.
  2. "Russia: Kamchatka and the Russian Pacific Islands" Peaklist.org. Retrieved 2013-03-23.
  3. Zellmer, Georg F. (1 January 2008). "Some first-order observations on magma transfer from mantle wedge to upper crust at volcanic arcs". Geological Society, London, Special Publications. 304 (1): 15–31. Bibcode:2008GSLSP.304...15Z. doi:10.1144/SP304.2. ISSN 0305-8719.
  4. "Chapter 1 Recent tectonics of the crust and volcanism in Kamchatka". Bulletin Volcanologique. 42 (1–4): 31. 1 March 1979. Bibcode:1979BVol...42....9.. doi:10.1007/BF02597042. ISSN 0366-483X.
  5. Kardanova, O.F.; Firstov, P.P. (1 April 2009). "Radioactive elements in sediments and altered rocks of the Kikhpinych long-lived volcanic center". Journal of Volcanology and Seismology. 3 (2): 90. doi:10.1134/S0742046309020031. ISSN 0742-0463.
  6. Kugaenko, Yu A.; Saltykov, V. A.; Gorbatikov, A. V.; Stepanova, M. Yu (1 May 2015). "The model of the Uzon-Geizernaya volcano-tectonic depression and Kikhpinych volcano, Kamchatka, from the joint analysis of microseismic sounding data and local geodynamic activity". Izvestiya, Physics of the Solid Earth. 51 (3): 404. Bibcode:2015IzPSE..51..403K. doi:10.1134/S106935131503009X. ISSN 1069-3513.
  7. KRIJANOVSKY, N. (30 June 1934). "Volcanoes of KamchatkaCompiled and Translated from Russian Sources". GSA Bulletin. 45 (3): 545. Bibcode:1934GSAB...45..529K. doi:10.1130/GSAB-45-529. ISSN 0016-7606.
  8. Ponomareva, Vera; Melekestsev, Ivan; Braitseva, Olga; Churikova, Tatiana; Pevzner, Maria; Sulerzhitsky, Leopold (2007). "Late Pleistocene-Holocene volcanism on the Kamchatka Peninsula, Northwest Pacific Region" (PDF). Volcanism and Subduction: The Kamchatka Region. Geophysical Monograph Series. 172. p. 170. Bibcode:2007GMS...172..165P. doi:10.1029/172gm15. ISBN 978-0-87590-436-8.
  9. Melekestsev, I. V.; Braytseva, O. A.; Ponomareva, V. V.; Sulerzhitskiy, L. D. (May 1990). "Ages and Dynamics of Development of the Active Volcanoes of the Kurile-Kamchatka Region". International Geology Review. 32 (5): 437. Bibcode:1990IGRv...32..436M. doi:10.1080/00206819009465789.
  10. "Chapter 1 Recent tectonics of the crust and volcanism in Kamchatka". Bulletin Volcanologique. 42 (1–4): 65. 1 March 1979. Bibcode:1979BVol...42....9.. doi:10.1007/BF02597042. ISSN 0366-483X.
  11. Volynets, O. N.; Ponomareva, V. V.; Tsyurupa, A. A. (1 November 1989). "Petrological and Tephrochronological Studies of Krasheninnikov Volcano, Kamchatka". International Geology Review. 31 (11): 1107–1122. Bibcode:1989IGRv...31.1107V. doi:10.1080/00206818909465964. ISSN 0020-6814.
  12. "Chapter 1 Recent tectonics of the crust and volcanism in Kamchatka". Bulletin Volcanologique. 42 (1–4): 107. 1 March 1979. Bibcode:1979BVol...42....9.. doi:10.1007/BF02597042. ISSN 0366-483X.
  13. Braitseva, O. A.; Melekestsev, I. V.; Ponomareva, V. V.; Sulerzhitsky, L. D. (1 December 1995). "Ages of calderas, large explosive craters and active volcanoes in the Kuril-Kamchatka region, Russia" (PDF). Bulletin of Volcanology. 57 (6): 385. Bibcode:1995BVol...57..383B. doi:10.1007/BF00300984. ISSN 0258-8900.
  14. Braitseva, O. A.; Melekestsev, I. V.; Ponomareva, V. V.; Sulerzhitsky, L. D. (1 December 1995). "Ages of calderas, large explosive craters and active volcanoes in the Kuril-Kamchatka region, Russia" (PDF). Bulletin of Volcanology. 57 (6): 400. Bibcode:1995BVol...57..383B. doi:10.1007/BF00300984. ISSN 0258-8900.
  15. Ponomareva, Vera V.; Melekestsev, Ivan V.; Dirksen, Oleg V. (1 November 2006). "Sector collapses and large landslides on Late Pleistocene–Holocene volcanoes in Kamchatka, Russia" (PDF). Journal of Volcanology and Geothermal Research. 158 (1): 127–128. Bibcode:2006JVGR..158..117P. doi:10.1016/j.jvolgeores.2006.04.016.
  16. Melekestsev, I. V.; Braytseva, O. A.; Ponomareva, V. V.; Sulerzhitskiy, L. D. (May 1990). "Ages and Dynamics of Development of the Active Volcanoes of the Kurile-Kamchatka Region". International Geology Review. 32 (5): 446. Bibcode:1990IGRv...32..436M. doi:10.1080/00206819009465789.
  17. Bazanova, L. I.; Melekestsev, I. V.; Ponomareva, V. V.; Dirksen, O. V.; Dirksen, V. G. (1 May 2016). "Late Pleistocene and Holocene volcanic catastrophes in Kamchatka and in the Kuril Islands. Part 1. Types and classes of catastrophic eruptions as the leading components of volcanic catastrophism". Journal of Volcanology and Seismology. 10 (3): 154. doi:10.1134/S0742046316030027. ISSN 0742-0463.
  18. Belousova, Marina; Belousov, Alexander. "Large - scale landslides at volcanoes in Kuril - Kamchatka region" (PDF). kcs.dvo.ru. Retrieved 5 December 2017.
  19. Siebert, Lee (1 October 1984). "Large volcanic debris avalanches: Characteristics of source areas, deposits, and associated eruptions". Journal of Volcanology and Geothermal Research. 22 (3): 178. Bibcode:1984JVGR...22..163S. doi:10.1016/0377-0273(84)90002-7.
  20. Leonov, V.L. (1993). "Lineaments, Tectonic Fractures, and Mechanical Behavior of Klyuchevskoi Volcano" (PDF). www.kscnet.ru. Institute of Volcanology and Seismology Far Eastern Branch. p. 641. Retrieved 5 December 2017.
  21. Solomina, Olga; Calkin, Parker E. (May 2003). "Lichenometry as Applied to Moraines in Alaska, U.S.A., and Kamchatka, Russia". Arctic, Antarctic, and Alpine Research. 35 (2): 134. doi:10.1657/1523-0430(2003)035[0129:laatmi]2.0.co;2.
  22. Girina, O.A. (1 May 2012). "On precursor of Kamchatkan volcanoes eruptions based on data from satellite monitoring" (PDF). Journal of Volcanology and Seismology. 6 (3): 144. doi:10.1134/S0742046312030049. ISSN 0742-0463.

Sources
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