Geological and Environmental Engineering | Article | Published 2019

Re-Os Geochronology and Sulfur Isotopes of the Lyangar W-Mo Deposit: Implications for Permian Tectonic Setting in South Tianshan Orogen, Uzbekistan

Keywords: Lyangar W-Mo deposit; molybdenite Re-Os ages; sulfur isotopes; skarn; south Tianshan orogen


The Lyangar W-Mo skarn deposit is located in the Nuratau area (western Uzbekistan), South Tianshan Orogen. The skarn system is distributed along the contact zone between the Aktau granitoid and the upper Paleozoic sedimentary rocks. Six molybdenite samples from the Lyangar deposit yielded a Middle Permian Re-Os isochron age of 268.0 ± 12 Ma (MSWD = 0.43) and a weighted mean age of 263.8 ± 1.5 Ma (MSWD = 0.22). Molybdenites have low Re contents (12.49 to 16.65 ppm), indicative of a continental crust-dominated source. The molybdenite δ34S values fall inside a narrow range (1.0 to 3.8‰; average 2.3‰), implying that the ore metals were likely derived from the granite intrusion. We concluded that the Lyangar W-Mo deposit was formed in a post-collisional setting caused by continental collision between the Tarim and Kazakhstan cratons.


  1. Meinert, L.D.; Dipple, G.M.; Nicolescu, S. World skarn deposits. Econ. Geol. 2005, 100, 299–336.
  2. 2. Romer, R.L.; Kroner, U. Phanerozoic tin and tungsten mineralization—Tectonic controls on the
  3. distribution of enriched protoliths and heat sources for crustal melting. Gondwana Res. 2016, 31, 60–95.
  4. 3. Deng, X.H.; Chen, Y.J.; Santosh, M.; Wang, J.B.; Li, C.; Yue, S.W.; Zheng, Z.; Chen, H.J.; Tang, H.S.; Dong,
  5. L.H.; et al. U-Pb zircon, Re-Os molybdenite geochronology and Rb-Sr geochemistry from the
  6. Xiaobaishitou W(-Mo) deposit: Implications for Triassic tectonic setting in eastern Tianshan, NW China.
  7. Ore Geol. Rev. 2017, 80, 332–351.
  8. 4. Sengör, A.M.C.; Natalin, B.A.; Burtman, V.S. Evolution of the Altaid tectonic collage and Paleozoic crustal
  9. growth in Eurasia. Nature 1993, 364, 299–307.
  10. 5. Gao, J.; Klemd, R.; Qian, Q.; Zhang, X.; Li, J.; Jiang, T.; Yang, Y. The collision between the Yili and Tarim
  11. blocks of the Southwestern Altaids: geochemical and age constraints of a leucogranite dike crosscutting
  12. the HP-LT metamorphic belt in the Chinese Tianshan Orogen. Tectonophysics 2011, 499, 118–131.
  13. 6. Sillitoe, R.H. A plate tectonic model for the origin of porphyry copper deposits. Econ. Geol. 1972, 67, 184–
  14. 197.
  15. 7. Pirajno, F. Hydrothermal Processes and Mineral System; Springer: Berlin, Germany, 2009; pp.1–1250.
  16. 8. Pirajno, F. The Geology and Tectonic Settings of China’s Mineral Deposits; Springer: Berlin, Germany, 2013;
  17. pp.1–679.
  18. 9. Mao, S.D.; Chen, Y.J.; Zhou, Z.J.; Lu, Y.H.; Guo, J.H.; Qin, Y.; Yu, J.Y. Zircon geochronology and Hf isotope
  19. geochemistry of the granitoids in the Yangshan gold field, western Qinling, China: Implications for
  20. petrogenesis, ore genesis and tectonic setting. Geol. J. 2014, 49, 359–382.
  21. 10. Zhou, Z.J.; Liu, Z.W.; Qin, Y. Geology, geochemistry and genesis of the Huachanggou gold deposit,
  22. western Qinling Orogen, central China. Geol. J. 2014, 49, 424–441.
  23. 11. Chen, Y.J. Progress in the study of Central Asia-type orogenesis-metallogenesis in Northwest China. J.
  24. China Univ. Geosci. 2000, 6, 17–22. (In Chinese with English Abstract)
  25. 12. Chen, Y.J. Orogenic-type deposits and their metallogenic model and exploration potential. Geol. China
  26. 2006, 33, 1181–1196. (In Chinese with English Abstract)
  27. 13. Chen, Y.J. Indosinian tectonic setting, magmatism and metallogenesis in Qinling Orogen, central China.
  28. Geol. China 2010, 37, 854–865. (In Chinese with English Abstract)
  29. 14. Chen, Y.J. The development of continental collision metallogeny and its application. Acta Petrol. Sin. 2013,
  30. 29, 1–17. (In Chinese with English Abstract)Chen, Y.J.; Fu, S.G. Gold Mineralization in West Henan, China. Seismological Press: Beijing, China, 1992; pp.
  31. 1–234. (In Chinese with English Abstract)
  32. 16. Chen, Y.J.; Santosh, M. Triassic tectonics and mineral systems in the Qinling Orogen, central China. Geol. J.
  33. 2014, 49, 338–358.
  34. 17. Chen, Y.J.; Santosh, M.; Somerville, I.D.; Chen, H.Y. Indosinian tectonics and mineral systems in China: An
  35. introduction. Geol. J. 2014, 49, 331–337.
  36. 18. Abzalov, M. Zarmitan granitoid-hosted gold deposit, Tian Shan Belt, Uzbekistan. Econ. Geol. 2007, 102,
  37. 519–532.
  38. 19. Bierlein, F.; Wilde, A. New constraints on the polychronous nature of the giant Muruntau gold deposit
  39. from wall-rock alteration and ore paragenetic studies. J. Geol. Soc. Aust. 2010, 57, 839–854.
  40. 20. Chen, Z.L.; Zhou, Y.G.; Han, F.B.; Chen, B.L.; Hao, R.X.; Li, S.B.; Liu, Z.R. Exhumation degree of the
  41. Tianshan Range and its implications for ore preservation. J. China Univ. Geosci. 2012, 37, 903–916. (In
  42. Chinese with English Abstract)
  43. 21. Goldfarb, R.J.; Taylor, R.D.; Collins, G.S.; Goryachev, N.A.; Orlandini, O.F. Phanerozoic continental
  44. growth and gold metallogeny of Asia. Gondwana Res. 2014, 25, 48–102.
  45. 22. Li, H.H.; Qiu, R.Z.; Tan, Y.J.; Qi, S.j.; Wang, Q.M.; Wang, K.A.; Wang, H.P.; Wang, J.J.; Yuan, C.H.; Chen,
  46. S.D. The Exploration and Development Guidelines of Mineral Resources in the Five Countries in Central Asian;
  47. China University of Geosciences Press: Wuhan, China, 2010; pp. 1–207. (In Chinese)
  48. 23. Yao, W.G.; Lv, P.R.; Wu, L.; Hong, J.; Yang, B.; Jia, Q.Z.; Li, B.Q. Geological characteristics of dominant
  49. mineral resources of the Tianshan Mountains in Kyrgyzstan and their prospecting potential. Geol. Bull.
  50. China 2015, 34, 710–725. (In Chinese with English Abstract)
  51. 24. Mirkamalov, R.H.; Golovanov, I.M.; Chirikin, V.V.; Phadeicheva, L.P.; Mirkamalova, G.H. Altas of Ore
  52. Deposits Models of Uzbekistan; PrintXpress: Tashkent, Uzbekistan, 2011; pp.1–100.
  53. 25. Stein, H.J.; Markey, R.J.; Morgan, J.W.; Hannah, J.L.; Schersten, A. The remarkable Re-Os chronometer in
  54. molybdenite: How and why it works. Terra Nova 2001, 13, 479–486.
  55. 26. Conliffe, J.; Selby, D.; Porter, S.J.; Feely, M. Re-Os molybdenite dates from the Ballachulish and Kilmelford
  56. igneous complexes (Scottish Highlands): Age constraints for late Caledonian magmatism. J. Geol. Soc.
  57. London 2010, 167, 297–302.
  58. 27. Chen, Y.J.; Pirajno, F.; Sui, Y.H. Isotope geochemistry of the Tieluping silver deposit, Henan, China: A case
  59. study of orogenic silver deposits and related tectonic setting. Mineral. Depos. 2004, 39, 560–575.
  60. 28. Chen, Y.J.; Pirajno, F.; Qi, J.P. The Shanggong gold deposit, eastern Qinling Orogen, China: Isotope
  61. geochemistry and implications for ore genesis. J. Asian Earth Sci., 2008, 33, 252–266.
  62. 29. Yang, Y.F.; Chen, Y.J.; Li, N.; Mi, M.; Xu, Y.L.; Li, F.L.; Wan, S.Q. Fluid inclusion and isotope geochemistry
  63. of the Qian’echong giant porphyry Mo deposit, Dabie Shan, China: A case of NaCl-poor, CO2-rich fluid
  64. systems. J. Geochem. Explor. 2013, 124, 1–13.
  65. 30. Zhou, Z.J.; Chen, Y.J.; Jiang, S.Y.; Zhao, H.X.; Qin, Y.; Hu, C.J. Geology, geochemistry and ore genesis of
  66. the Wenyu gold deposit, Xiaoqinling gold field, southern margin of North China Craton. Ore Geol. Rev.
  67. 2014, 59, 1–20.
  68. 31. Zhou, Z.J.; Chen, Y.J.; Jiang, S.Y.; Hu, C.J.; Qin, Y.; Zhao, H.X. Isotope and fluid inclusion geochemistry
  69. and ore genesis of the Qiangma gold deposit, Xiaoqinling gold field, Qinling Orogen, southern margin of
  70. North China Craton. Ore Geol. Rev. 2015, 66, 47–64.
  71. 32. Deng, X.H.; Chen, Y.J.; Santosh, M.; Yao, J.M.; Sun, Y.L. Re-Os and Sr-Nd-Pb isotope constraints on source
  72. of fluids in the Zhifang Mo deposit, Qinling Orogen, China. Gondwana Res. 2016, 30, 132–143.
  73. 33. Zhou, Z.J.; Chen, Z.L.; Han, F.B.; Han, S.Q.; Wang, Z. X.; Xiao, W.F.; Shen, T.; Wu, J.F. Fluid inclusion and
  74. isotope geochemistry of the Atebayue Sb deposit, South Tianshan Orogen, Kyrgyzstan. Geol. J. 2018, 53,
  75. 1050–1060.
  76. 34. Gao, J.; Long, L.; Klemd, R.; Qian, Q.; Liu, D.; Xiong, X.; Su, W.; Liu, W.; Wang, Y.; Yang, F. Tectonic
  77. evolution of the South Tianshan orogen and adjacent regions, NW China: Geochemical and age
  78. constraints of granitoid rocks. Int. J. Earth Sci. 2009, 98, 1221–1238.
  79. 35. Zhang, G.Z.; Xue, C.J.; Chi, G.X.; Liu, J.Y.; Zhao, X.B.; Zu, B.; Zhao, Y. Multiple-stage mineralization in the
  80. Sawayaerdun orogenic gold deposit, western Tianshan, Xinjiang: Constraints from paragenesis, EMPA
  81. analyses, Re-Os dating of pyrite (arsenopyrite) and U-Pb dating of zircon from the host rocks. Ore Geol.
  82. Rev. 2017, 81, 326–341.
















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