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干旱区地理 ›› 1991, Vol. 14 ›› Issue (1): 25-31.doi: 10.13826/j.cnki.cn65-1103/x.1991.01.005

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克里雅河流域黄土的性状与成因

李拴科   

  1. 中国科学院、国家计划委员会地理研究所
  • 出版日期:1991-03-25 发布日期:2025-12-25

THE CHARACTERISTICS AND FORMATION CAUSE OF LOESS IN KERERY RIVER VALLEY, AINJIANG

Li Shüanke   

  1. Institute of Geography, Chinese Academy of sciences
  • Published:1991-03-25 Online:2025-12-25

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摘要： 本文论述了克里雅河流域黄土的物质组成与分布,探讨了黄土的来源与沉积环境,认为克里雅河流域的黄土物质:（1）是全新世堆积物;（2）粉砂与细砂占优势,级配特征反映堆积时强烈的混合作用;（3）地球化学成份及矿物组合反映出比洛川更干燥的沉积环境。pH值、有机质与CaCO3含量均支持这一点;（4）塔克拉玛干沙漠的粉尘是其物源区,风尤其是尘暴气流是主要搬运营力;（5）分布高度介于2600-4100m,自低而高,黄土物质的厚度变薄,颗粒变细,分选变差,峰区变窄;（6）黄土化过程微弱,CaCO3及易溶盐基离子均无明显移动。

关键词: 黄土沉积持征, 粒度分析, 新疆克里雅河

Abstract: This paper deals with the composition and distribution of loess sediments in Kereya river valley, studies the source and deposition environment of the loess.The following conclusions have been obtained：（1）the loess deposition in Holocene；（2）the main compositions are sand and salt sand；（3）deposition environment' is very dry, response to the geochemical compositions, mineral compositions, PH,CaCo3 ect；（4）loess is transported from Takelamagan sand land；（5）distribution altitude is about 2600-4100 m.a.s.l, the higher the altitude, the thiner the loess；（6）loess formation is very weak, CaCo3 and soluble subject keep originally.