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Volume 28 Issue 4
Jul 2017
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Fangming Zeng, Shuyuan Xiang. Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results. Journal of Earth Science, 2017, 28(4): 622-627. doi: 10.1007/s12583-016-0712-6
Citation: Fangming Zeng, Shuyuan Xiang. Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results. Journal of Earth Science, 2017, 28(4): 622-627. doi: 10.1007/s12583-016-0712-6

Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results

doi: 10.1007/s12583-016-0712-6
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  • Corresponding author: Fangming Zeng,
  • Received Date: 17 Sep 2015
  • Accepted Date: 23 Nov 2015
  • Publish Date: 01 Aug 2017
  • Xitaijinair (XT) Salt Lake, located in the western Qaidam Basin, is significant for reconstructing the evolution of inland drying climate. However, the chronological and mineralogical records from this lake are rare. This study investigated the chronology (accelerator mass spectrometry (AMS) 14C ages and optically stimulated luminescence (OSL) ages) and mineral compositions of sediment in the 240-cm-deep XT Section of the Xitaijinair Salt Lake region. The conclusions are drawn as follows: (1) Nine AMS 14C ages, ranging between 33 and 40 cal ka BP, are obviously younger than the two OSL ages (57.9 and 69.1 ka). The 14C ages probably reflect contamination with modern carbon. (2) Both 14C and OSL ages indicate that the surface of Xitaijinair Salt Lake region has suffered erosion. (3) The sediments of XT Section are composed of silicates (quartz, muscovite, clinochlore and albite), carbonates (calcite, dolomite, and ankertie), halite and gypsum.


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