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CHEN Lin, TANG Hong-wei, REN Qing-jun, et al. The Recognition of Shengliqiao Rock Mass of Saliyakedaban, West Kunlun[J]. Northwestern Geology, 2014, 47(4): 61-72.
Citation: CHEN Lin, TANG Hong-wei, REN Qing-jun, et al. The Recognition of Shengliqiao Rock Mass of Saliyakedaban, West Kunlun[J]. Northwestern Geology, 2014, 47(4): 61-72.
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The Recognition of Shengliqiao Rock Mass of Saliyakedaban, West Kunlun

  • 1. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China;

  • 2. No.282 Geological Party, Sichuan Bureau of Geology for Nuclear Industry, Deyang 618000, China

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  • Received Date: June 17, 2014
  • Revised Date: October 21, 2014
  • Available Online: July 28, 2022
  • Published Date: December 04, 2014
    Graphical Abstract
    • Abstract
  • With complex lithology and rock types, Shengliqiao rock mass is a large outcrop of mixed granite in Kudi-Mazha area of West Kunlun. Geochemical characteristics of high SiO2 content indicates that the rock mass is mainly acid rock. The value of Rittmann index(σ) is between 2.13 and 2.89; strong incompatible elements including K, U, Ba, Rb, Th have obvious enrichment features; high field elements such as Nb, Ta, P, Ti are apparently depleted; the distribution of Nb-Ta is in a groove shape, and Sr element is also in an obvious deficit; the total of rare earth element is fairly low, with LREE enriched while HREE depleted. According to the zircon U-Pb isotopic dating analysis, the average ages are (229.7±1.4)Ma and (204.65±0.59)Ma, indicating that Shengliqiao rock mass occurred in the Late Triassic age. In summary, the rock is I-type granite of high aluminum potassium calcium alkaline, a result of interaction between crust and mantle. The material resource came mainly from the mantle with a certain amount of crustal material. Combined with the features of regional tectonic position and magmatic evolution of the analysis, it is concluded that Shengliqiao rock unit is a product of intracontinental subduction. The displayed feature of island arc granite is induced by the influence of crustal material resources.
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    • References (20)
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