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末次冰期间冰阶晚期长江中游风尘堆积及环境意义

庄检平

庄检平. 末次冰期间冰阶晚期长江中游风尘堆积及环境意义[J]. 沉积学报, 2007, 25(3): 424-428.
引用本文: 庄检平. 末次冰期间冰阶晚期长江中游风尘堆积及环境意义[J]. 沉积学报, 2007, 25(3): 424-428.
ZHUANG Jianping. Eolian Deposits in the Middle Reaches of the Yangtze River During Late Interstadial of the Last Glacial (4022KaBP) and Its Environmental Significance[J]. Acta Sedimentologica Sinica, 2007, 25(3): 424-428.
Citation: ZHUANG Jianping. Eolian Deposits in the Middle Reaches of the Yangtze River During Late Interstadial of the Last Glacial (4022KaBP) and Its Environmental Significance[J]. Acta Sedimentologica Sinica, 2007, 25(3): 424-428.

末次冰期间冰阶晚期长江中游风尘堆积及环境意义

详细信息
    通讯作者:

    庄检平

Eolian Deposits in the Middle Reaches of the Yangtze River During Late Interstadial of the Last Glacial (4022KaBP) and Its Environmental Significance

More Information
    Corresponding author: ZHUANG Jianping
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出版历程
  • 收稿日期:  1900-01-01
  • 修回日期:  1900-01-01
  • 刊出日期:  2007-06-10

目录

    末次冰期间冰阶晚期长江中游风尘堆积及环境意义

      通讯作者: 庄检平

    摘要: 定山砂山剖面的下层灰黄色土-淤泥沉积,为末次冰期间冰阶(40~22kaBP)区域降尘堆积。灰黄色土层与淤泥为同源异相沉积,粒度组合基本相同,无特征性差异。频数曲线都以双峰为特征,第一峰为主峰,众值8~32 μm;第二为次峰,众值250~500μm。9.75±0.25Φ~4.25±0.25Φ(1 ~62.5μm)在垂向上具有相似的线形变化,组成第一峰态,各粒级垂向上的含量变化是区域冬季风强弱变化的敏感指标;2.25±0.25Φ ~-0.75±0.25Φ (180~2000 μm)具有相似的线形,组成第二峰态,各粒级剖面含量变化则揭示了冬半年环境干湿状况与局地尘暴事件。在对应区域降尘堆积较弱的两个时段,存在局地尘暴的增强事件,指示局地冬半年环境干燥。

    English Abstract

    庄检平. 末次冰期间冰阶晚期长江中游风尘堆积及环境意义[J]. 沉积学报, 2007, 25(3): 424-428.
    引用本文: 庄检平. 末次冰期间冰阶晚期长江中游风尘堆积及环境意义[J]. 沉积学报, 2007, 25(3): 424-428.
    ZHUANG Jianping. Eolian Deposits in the Middle Reaches of the Yangtze River During Late Interstadial of the Last Glacial (4022KaBP) and Its Environmental Significance[J]. Acta Sedimentologica Sinica, 2007, 25(3): 424-428.
    Citation: ZHUANG Jianping. Eolian Deposits in the Middle Reaches of the Yangtze River During Late Interstadial of the Last Glacial (4022KaBP) and Its Environmental Significance[J]. Acta Sedimentologica Sinica, 2007, 25(3): 424-428.

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