QIAO Shu-qing, YANG Zuo-sheng, LI Yun-hai, CHEN Xiao-hui. OXYGEN ISOTOPE OF QUARTZ IN SEDIMENTS FROM THE YANGTZE (CHANGJIANG) AND YELLOW(HUANGHE) RIVERS[J]. Marine Geology & Quaternary Geology, 2006, 26(3): 15-19.
Citation: QIAO Shu-qing, YANG Zuo-sheng, LI Yun-hai, CHEN Xiao-hui. OXYGEN ISOTOPE OF QUARTZ IN SEDIMENTS FROM THE YANGTZE (CHANGJIANG) AND YELLOW(HUANGHE) RIVERS[J]. Marine Geology & Quaternary Geology, 2006, 26(3): 15-19.
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OXYGEN ISOTOPE OF QUARTZ IN SEDIMENTS FROM THE YANGTZE (CHANGJIANG) AND YELLOW(HUANGHE) RIVERS

  • Institute of Estuarine Coastal Studies, Ocean University of China, Qingdao 266003, China

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  • Received Date: October 18, 2005
  • Revised Date: December 22, 2005
    Graphical Abstract
    • Abstract
  • Quartz in sediments from the Yangtze and Yellow Rivers was separated by potassium hydrogen sulfate (KHSO4) fusing-hydrofluorosilic acid (H2SiF6). Oxygen was extracted from the quartz fraction by BrF5 (used as oxidant), and then its isotopic composition was analyzed by mass-spectrometer, expressed as δ18O (18O/16O)values (relative to SMOW). The results show that δ18O values generally increase with grain size of quartz changing from coarse to fine. The oxygen isotope ratios (δ18O) of quartz from the Yangtze River are higher than those from the Yellow River. The differences in δ18O values of the same grain-size quartz between the Yangtze and Yellow Rivers may have resulted from different sediment sources and climate conditions along these two river basins.
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    • References (19)
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