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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Provenance of loess material and formation of loess deposits on the Chinese Loess Plateau
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Provenance of loess material and formation of loess deposits on the Chinese Loess Plateau

机译:黄土高原黄土物源及黄土沉积物的形成

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摘要

Results of a multiple, isotopic, chemical and mineralogical analysis of loess from the three northwestern inland basins (the Junggar Basin, the Tarim Basin and the Qaidam Basin) and the Loess Plateau region of China are summarized. They suggest a qualification of the conventional views that the three northwestern basins were the important source areas of the Loess Plateau and that the sand deserts were the primary single source of the Chinese loess. It is argued that the gobi (stony desert) in southern Mongolia and the adjoining gobi and sand deserts (the Badain Jaran Desert, Tengger Desert, Ulan Buh Desert, Hobq Desert and Mu Us Desert) in China, rather than the three inland basins, are the dominant source areas of the Loess Plateau. However, although these gobi and sand deserts are regarded as the main source regions, they serve as dust and silt holding areas rather than dominant producers. The mountain processes (including glacial grinding, frost weathering, salt weathering, tectonic processes, and some fluvial comminution) in the Gobi Altay Mts., Hangayn Mts. and the Qilian Mts. have played an important role in producing the vast amounts of loess-sized material for forming the Loess Plateau.
机译:总结了西北三个内陆盆地(准gar尔盆地,塔里木盆地和柴达木盆地)和中国黄土高原地区黄土的多重同位素,化学和矿物学分析结果。他们提出了一种传统观点的证明,即西北三个盆地是黄土高原的重要来源地区,而沙漠是中国黄土的主要单一来源。有人认为,中国南部的戈壁(石漠化沙漠)以及毗邻的戈壁和沙地沙漠(巴丹吉林沙漠,腾格里沙漠,乌兰布赫沙漠,霍布克沙漠和穆斯沙漠),而不是三个内陆盆地,是黄土高原的主要来源地区。然而,尽管这些戈壁滩和沙地沙漠被认为是主要的污染源地区,但它们却是尘土和淤泥的聚集地,而不是主要的生产者。杭加恩山戈壁阿勒泰山的山地过程(包括冰川磨,霜冻风化,盐分风化,构造过程和一些河流粉碎作用)。和祁连山在生产大量形成黄土高原的黄土大小材料方面发挥了重要作用。

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