| 应用粒度分析辨别某些第四纪混杂堆积成因初探 |
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| 引用本文： | 李世杰. 应用粒度分析辨别某些第四纪混杂堆积成因初探[J]. 冰川冻土, 1988, 0(4) |
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| 作者姓名： | 李世杰 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所 |
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| 摘 要： | 本文从粒度特征分析了青海昆仑山垭口地区的第四纪混杂堆积和甘肃武都泥石流堆积以及贡嘎山海洋性冰川的现代冰碛之间的差异性,明显看出,由于各种第四纪混杂堆积的搬运介质、搬运过程及沉积过程不同,第四纪混杂堆积的粒度特征存在明显的不同。沉积物的粒度特征反映了沉积环境。因此,用粒度特征来辨别各种第四纪混杂堆积也是一种行之有效的方法。
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| 关 键 词： | 粒度特征 混杂堆积 沉积环境 |
A Preliminary Study of the Distinction of the Genesesof Various Quarternary Diamictons UsingGrain-Size Analysis |
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| Li Shijie. A Preliminary Study of the Distinction of the Genesesof Various Quarternary Diamictons UsingGrain-Size Analysis[J]. Journal of Glaciology and Geocryology, 1988, 0(4) |
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| Authors: | Li Shijie |
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| Abstract: | In this paper, the differences between the various Quaternary diamictons in the regions around the Kunlun Mountain Pass, Qinghai province, the debris-flow deposits in Wudu region, Gansu province and the modern tills of the Gongba Glacier in the Gongga Mountain, Sichuan province are discussed on the basis of the grain-size characteristics of the sediments, and the geneses of various Quaternary diamictons are distinquished further. There exist obvious differences in their transport medium, transport processes and the deposit processes. The grain-size characteristics reflect the sedimentary environment. Therefore, to distinquish various Quaternary diamictons by using the grain-size characteristics of the sediments is one of effective ways. |
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| Keywords: | grain-size characteristics diamictons sedimentary environment |
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