华东师范大学学报(自然科学版) ›› 2005, Vol. 2005 ›› Issue (1): 92-98.

• 地理学 河口海岸学 • 上一篇    下一篇

长江三角洲平原粘土矿物分布特征及其环境意义

吴月英，陈中原，王张华   

  1. 华东师范大学 河口海岸国家重点实验室，上海200062
  • 收稿日期:2003-04-02 修回日期:2003-06-08 出版日期:2005-03-25 发布日期:2005-03-25
  • 通讯作者: 吴月英

Distribution of Clay Minerals in the Yangtze Delta Plain and Its Paleoenvironmental Implication(Chinese)

WU Yue-ying,CHEN Zhong-yuan,WANG Zhang-hua   

  1. State Key Laboratory of Estuarine and Coastal Research， East China Normal University，Shanghai200062,China
  • Received:2003-04-02 Revised:2003-06-08 Online:2005-03-25 Published:2005-03-25
  • Contact: WU Yue-ying

摘要： 采用XRD研究了长江三角洲地区15个表层样品和5个剖面样品中的粘土矿物.结果表明： 表层样品粘土矿物含量和组合类型的空间分布以本区7 500-8 000a前古岸线为界呈现了明显的分区现象，指示古岸线东西两侧物源和沉积环境的差异；剖面样品中伊利石和高岭石含量相互消长的变化则反映了晚更新世末以来气候的波动特征.

关键词: 粘土矿物, 时空分布, 环境意义, 长江三角洲平原, 粘土矿物, 时空分布, 环境意义, 长江三角洲平原

Abstract: Clay minerals in 15 surficial samples and 5 profile samples from the Yangtze Delta plain were analyzed by X-ray diffraction. The result shows that clay mineral assemblage of the surfical sediments are distinguished by the coastline 7500-8000aBP, indicating different sediment sources and sedimentary environments. The change of content of illite vs. kaolinite in the profile sediments reflects the climate fluctuations since late Pleistocene.

Key words: spatial and temporal distribution, paleoenvironmental implication, Yangtze Delta plain, clay minerals, spatial and temporal distribution, paleoenvironmental implication, Yangtze Delta plain

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