Stacked 2.6‐Ma grain size record from the Chinese loess based on five sections and correlation with the deep‐sea δ<sup>18</sup>O record

DOI Web Site Web Site 被引用文献9件
  • Z. L. Ding
    Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
  • E. Derbyshire
    Centre for Quaternary Research, Department of Geography Royal Holloway, University of London Egham UK
  • S. L. Yang
    Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
  • Z. W. Yu
    Department of Resource Exploitation and Engineering China University of Mining and Technology Beijing China
  • S. F. Xiong
    Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
  • T. S. Liu
    Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

書誌事項

公開日
2002-08-06
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2001pa000725
公開者
American Geophysical Union (AGU)

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説明

<jats:p>This study aims to establish a stacked climate record of the Quaternary period from the Chinese loess sequence and to address the forcing mechanisms for the regional climate history of the Loess Plateau by correlating the stacked record with a composite δ<jats:sup>18</jats:sup>O record in deep‐sea sediments. A total of 18,352 samples were obtained from five loess sections, located at Baoji, Lingtai, Jingchuan, Puxian, and Pingliang in the southern and middle Loess Plateau. These yielded high‐resolution grain size records. Between‐section correlation of these shows that although small depositional hiatuses are present in places within a single section, most parts of the sections display near‐continuous dust deposition throughout the Quaternary. The grain size records were tuned simultaneously to the theoretical variations in obliquity and precession of the Earth’s orbit. The grain size records plotted on their orbital timescales were then averaged to form a stacked loess grain size time series, termed the “Chiloparts” record. This resolves most of the orbital timescale paleoclimate events buried in the loess‐soil sequences of the southern and middle Loess Plateau and can be used as a regional archive of the Pleistocene climate history in the Loess Plateau. Comparison of the “Chiloparts” record with a composite marine δ<jats:sup>18</jats:sup>O record shows that for the past 1.8 Ma, the loess‐paleosol record can be correlated almost cycle by cycle with the marine record. Several discrepancies in the climatic events between the two records have also been identified, implying that regional forcing mechanisms may have played a part in the climatic evolution of the Chinese Loess Plateau.</jats:p>

収録刊行物

  • Paleoceanography

    Paleoceanography 17 (3), 5-, 2002-08-06

    American Geophysical Union (AGU)

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