Element Features in Different Grain Size Fractions of Lacustrine Sediment and Their Environmental Implication: A Case Study of Huangqihai Lake
详细信息
- 责任者：Zhang Jingran (Key Laboratory of Wetland and Watershed Research of Poyang Lake ; Ministry of Educational ; Geography and Environment School ; Jiangxi Normal University ; Nanchang 330026 ; China) ; Jia Yulian
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(2)
- 关键词：湖泊沉积物 ; lake sediments ; 粒度分析 ; grain-size analysis ; 内蒙古 ; Inner Mongolia
- 页码：p.381-387
- 图表：4 illus., 19 refs.
- 分类号：1400
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The terminal Huangqihai Lake is located at the northern margin of the modern East Asian summer monsoon, and its evolution is sensitive to climate changes. Profile H3 is a few kilometers away to the southeast of the lake which was consisted of fine sand and silt deposited during ca 8.5~2.0 ka BP. The enrichment of Ti, Zr, Mn and Rb probably were the fragmentating characteristics of their silicate minerals, and that of Sr was caused by lacstrine autogenic carbonate. Zrc/（Rbc+Bac）ratio, Zrc/Rbc ratio, and the grain size effect of Zr and Ti（or Tic/Tif, Zrc/Zrf） showed the relative content of heavy and light minerals, which indicated the intensity of erosion in basin and transportation from basin to lake, and lake enlarging and reducing information.
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