地理研究

地理研究 ›› 1997, Vol. 16 ›› Issue (4): 71-79.doi: 10.11821/yj1997040010

• 论文 • 上一篇    下一篇

黄河、长江泥沙特性对比分析*

王腊春1, 陈晓玲1, 储同庆2   

  1. 1. 南京大学城市与资源学系 南京 210093;
    2. 南京大学地球科学系 南京 210093
  • 收稿日期:1995-12-04 修回日期:1996-12-26 出版日期:1997-12-15 发布日期:1997-12-15
  • 基金资助:
    *国家自然科学基金重点资助项目(21195111)

A CONTRAST ANALYSIS ON THE LOADS CHARACTER OFTHE CHANGJIANG RIVER AND THE YELLOW RIVER

Wang Lachun1, Chen Xiaoling1, Chu Tongqing2   

  1. 1. Dept. of Urban and Resources Science, Nanjing University, Nanjing 210093;
    2. Dept. of the Earth Science, Nanjing University, Nanjing 210093
  • Received:1995-12-04 Revised:1996-12-26 Online:1997-12-15 Published:1997-12-15

PDF (PC)

赞

摘要： 通过对黄河、长江泥沙的粒度分析、矿物分析及石英包裹体分析,揭示了两大河流泥沙的差异性。黄河悬沙粗于长江而底沙比长江为细。重矿物组合中,黄河泥沙黑云母含量远高于长江,粘土矿物中蒙脱石含量约比长江多一倍。反映了两大河流水动力条件及泥沙源区的环境差异。石英包裹体分析,更反映了两大河流泥沙源区的成因环境,为区分河流泥沙来源提供了一种新的方法。

关键词: 粒度特征, 矿物特征, 石英包裹体, 对比分析

Abstract: According to the analysis of grain size, mineral compositions and materials corapped by quartz in the suspended and bed loads sampled from the Changjiang River and the Yellow River, this paper reveals the difference of load's compositions between the two rivers. In the Yellow River the sizes of suspended loads are coarser than the Changjiang River, but the bed loads are finer. Among the mineral compositions, the biotite content of the Yellow River's loads in much more than the Changjiang River's, and its monomorillonite content in the clay minerals is over one time more than the Changjiang River's. All this reflects the effects of material sources and the hydraulic conditions on loads characters. The analysis of materials corapped by quartz indicates the environmental difference of material sources between the two rivers. It provides a new method for marking off the loads sources.

Key words: size of loads, characters of mineral, materials corapped by quartz, contrast analysis

PACS: 

  • P333.4