Geological and Environmental Engineering | Conference paper | Published 2021-12-08

The structural positions of the ophiolite complex in the Earth crust of the Western Tien-Shan

Publisher: IOP Publishing
Collection: IOP Conference Series: Earth and Environmental Science PAPER
Keywords: ophiolite complex,western Tien-Shan

Abstract

The westernmost parts of the Tien Shan region are located between two areas of crustal suturing, formed by the closure of the Turkestan Ocean, and probably the closure of a second ocean, the Gissar Ocean. Regional correlation of these sutures, however, has been problematic due to the lack of geological and geophysical data, as well as conflicting interpretations within the literature of various geological bodies. We summarize the information about Paleozoic ophiolites of westernmost parts of the Tien Shan for the international geoscientific audience from the literature and our own unpublished data. We focus on the best-known examples of Southern Tien Shan ophiolites which are remnants of Paleo-Asian Ocean, aligned in two main belts in Uzbekistan. Ophiolites reveal a wide age spectrum ranging from the Ordovician to the Devonian on the northern slope of Southern Tien Shan, and the Early Carboniferous on the southern slope. Considering all data on these ophiolites as well as regional considerations lets us conclude that a single ocean located to Late Carbo subduction of the Turkestan Ocean basin under the northern Karakum-Tadjik terrane caused back-arc continental rifting in the Gissar region in Early Carboniferous resulted in the formation of a small basin with oceanic crust. By late Carboniferous/early Permian times, both oceanic basins were subducted.

References

  1. [1] Biske Yu S 1996 Paleozoic structure and history of Southern Tien Shan (SPbGU) p 190 (in
  2. Russian)
  3. [2] Kurenkov S A, Didenko A N, Simonov V A Geodynamics of paleospreading (Moscow: GEOS)
  4. p 294 (in Russian)
  5. [3] Gao J, Long L, Klemd R, Qian Q, Liu D, Xiong X, Su W, Liu W, Wang Y, Yang F 2009 Tectonic
  6. evolution of the South Tianshan orogen and adjacent regions, NW China: geochemical and age
  7. constraints of granitoid rocks International Journal of Earth Sciences 98 (6) pp 1221-1238
  8. http://dx.doi.org/10.1007/s00531-008-0370-8
  9. [4] Zonenshain L P, Kuzmin M I, Natapov L M 1990 Geology of the USSR: a plate tectonic synthesis.
  10. American Geophysical Union, Geodynamics Series 21 p 242 p in Russian)[5] Seltmann R, Konopelko D, Biske G, Divaev F, Sergeev S 2011 Hercynian postcollisional
  11. magmatism in the context of Palaeozoic magmatic evolution of the Tien Shan orogenic belt J.
  12. Asian Earth Sciences 42 pp 821–838
  13. [6] McCann T, Nurtaev B, Kharin V, Valdivia-Manchego M 2013 Ordovician–Carboniferous
  14. tectono-sedimentary evolution of the North Nuratau region, Uzbekistan (Westernmost Tien
  15. Shan). Tectonophysics 590 pp 196-213
  16. [7] Konopelko D, Seltmann R, Mamadjanov Y, Romer R L, Rojas-Agramonte Y, Jeffries T, Fidaev
  17. D, Niyozov A 2017 A geotraverse across two paleo-subduction zones in Tien Shan, Tajikistan
  18. Gondwana Research 47 pp 110–130
  19. [8] Burtman V S 2006 Tien Shan and High Asia: Tectonics and Geodynamics in the Palaeozoic
  20. (Moscow: GEOS) p 216 (in Russian)
  21. [9] Dolgopolova A, Seltmann R, Konopelko D, Biske Yu S, Shatov V, Armstrong R, Belousova E,
  22. Pankhurst R, Koneev R, Divaev F 2017 Geodynamic evolution of the Western Tien Shan,
  23. Uzbekistan: Insights from U-Pb SHRIMP geochronology and Sr-Nd-Pb-Hf isotope mapping of
  24. granitoids. Gondwana Research 47 рp 76-109
  25. [10] Dilek Y, Furnes H 2011 Ophiolite genesis and global tectonics: Geochemical and tectonic
  26. fingerprinting of ancient oceanic lithosphere Geol. Soc. Am. Bull. 123 (3/4) pp 387-411
  27. https://doi.org/10.1130/B30446.1
  28. [11] Furnes H, Safonova I 2019 Ophiolites of the Central Asian Orogenic Belt: Geochemical and
  29. petrological characterization and tectonic settings Geosci. Front. 10 pp 1255-1284
  30. [12] Garkovets V G, Wolfson N B, Khvalovsky N B 1967 Ural-Tien Shan strike-slip and its role in
  31. the relationship between the structures of the Urals and the Tien Shan DAN USSR 176(4-6) pp
  32. 1127-30 (in Russian)
  33. [13] Lutz B G, Feldman M S 1992 Paleozoic magmatism of the Sultanuizdag ridge (Uzbekistan):
  34. geodynamic interpretation Geotectonics 4 pp 64-74
  35. [14] Khamrabaev I Kh 1969 Petrological-geochemical criteria of ore-bearing of magmatic complexes
  36. (Tashkent: Fan) p 214 (in Russian)
  37. [15] Stratified and intrusive formations of Uzbekistan Ed. Akhmedov N A 2000 (Tshkent: IMR) p 542
  38. (in Russian)
  39. [16] Nurtaev B S, Zenkova S O 2018 Geodynamic conditions and Paleozoic intrusive magmatism of
  40. the Ural and the western part of the South Tien-Shan by geological and geophysical data Geology
  41. and subsoil protection 4 pp 11-19 (in Russian)
  42. [17] Sabdyushev Sh Sh, Usmanov R R 1971 Tectonic covers, melange and ancient oceanic crust in
  43. Tamdytau Geotectonics 5 pp 27-37 (in Russian)
  44. [18] Yuldashev M N, Rustamov A I, Kholikov A B 2001 Structure and ore content (gold, platinoids)
  45. of mafic-ultramafic occurrences of Western Tamdytau Geology and Mineral Resources 6 pp 3-6
  46. (in Russian)
  47. [19] Mamarozikov U D 2018 Hyperbasites and basites of the Teskuduk-Chengeldy massif of Northern
  48. Tamdytau (Western Uzbekistan). Geology and Mineral Resources 3 pp 3-17 (in Russian)
  49. [20] Maksumova R A, Dzhenchuraeva A V, Berezansky A V 2001 The structure and evolution of the
  50. fold-nappe structure of the Kyrgyz Tien Shan Geology and geophysics 10 pp 44-145 (in Russian)
  51. [21] Alexeiev D V, Kroner A, Hegner E, Rojas-Agramonte Y, Biske Yu S, Wong J, Geng H Y, Ivleva
  52. E A, Muhlberg M, Mikolaichuk A V, Liu D 2016 Middle to Late Ordovician arc system in the
  53. Kyrgyz Middle Tianshan: From arc-continent collision to subsequent evolution of a Palaeozoic
  54. continental margin Gondwana Research 39 pp 261-291
  55. [22] Makarychev G I 1978 Geosynclinal process and the formation of the continental crust in the Tien
  56. Shan. Proc. of the GIN AN USSR Issue 318 (Moscow: Science) p 192 (in Russian)
  57. [23] Hegner E, Klemd R, Kroner A, Corsini M, Alexeiev D V, Iaccheri L M, Zack T, Dulski P, Xia
  58. X,Windley B F 2010 Mineral ages and P-T conditions of late Paleozoic high-pressure eclogite
  59. and provenance of melange sediments from Atbashi in the South Tianshan orogen of Kyrgyzstan
  60. American journal of Science 310 (9) рp 916-950 https://doi.org/10.2475/09.2010.07
Loading...
0

Views

0

Reads

0

Comments

0

Reviews

0

Liked

0

Shared

0

Bibliography

0

Citations

Like and share on

Cite this publication

Copy text below and use in your article