地理研究 ›› 1992, Vol. 11 ›› Issue (2): 41-51.doi: 10.11821/yj1992020006

• 论文 • 上一篇    下一篇

黄海粘土沉积物的来源与分布

林承坤   

  1. 南京大学大地海洋科学系
  • 收稿日期:1988-02-20 修回日期:1991-09-18 出版日期:1992-06-15 发布日期:1992-06-15
  • 基金资助:
    国家自然科学基金

A STUDY ON THE SOURCE AND THE DISTRIBUTION OF CLAY AT THE YELLOW SEA

Lin Chengkun   

  1. Department of Geo and Ocean Sciences, Nanjing University
  • Received:1988-02-20 Revised:1991-09-18 Online:1992-06-15 Published:1992-06-15

摘要: 本文根据区域自然地理原理,划分黄海粘土沉积物的补给区,在粘土矿物鉴定的基础上,用法方程定量探明黄海粘土沉积物的来源与分布,绘出黄海粘土沉积物分布图。图示:黄海来源于长江的粘土沉积物的分布面积,占其总面积的56.5%,来源于黄河的占43.5%。粘土沉积物的分布同洋流、海流的分布相吻合。

关键词: 补给区, 汇入点, 粘土矿物, 粘性泥沙, 法方程, 黄海

Abstract: Clay at the Yellow Sea (the HuangHai Sea) is composed largely of clay with d<0.005mm, mineralogically. The most important constituents are clay minerals such as illite, montmonllonite, kalinte, chlorite etc.. According to characteristics of natural zone and their effect on composition of clay minerals, the source of cohesive sediment at the Yellow Sea can be considered as coming from 2 supplying regions, namely, the Yangtze River(X1), the Yellow River and the abandoned Yellow River delta (x2). The converging points are set up in the Yellow Sea area. Sampling stations are set up in the supplying regions and the converging points. Evaluation was made of clay minerals obtained out of sample from each sample by X-ray diffraction method, to ascertain their types, calculate their percentage, and work out the average percentage of clay mineral to represent the clay mineral composition of cohesive sediment at the Yellow Sea and its supplying regions. Clay mineral percentage thus worked out through evaluation of sediment samples from sample sites at the Yellow Sea and its supplying regions are listed in Table 1.

Key words: supplying region, converging point, clay mineral, clay cohesive sediment, Normal equation, Yellow Sea