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《Science & Technology Review》 2017-06
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Salt-forming periods in the Qaidam Basin and their correlation with Quaternary glaciations and tectonic movements on the Tibetan Plateau

CHEN Andong;ZHENG Mianping;MLR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,CAGS;  
The thick late Cenozoic sediments and the abundant mineral resources in the Qaidam Basin provide an ideal place for the research of the palaeo-climate, the tectonic movement, the basin evolution, and the salt mineralization theory. This paper reviews the saltforming dating results recorded in the drilling cores and sections in the Qaidam Basin, and compares them with the tectonic movement periods and the Quaternary glaciations on the Tibetan Plateau. The comparison results indicate that there are certain correlations between the salt forming periods and the tectonic movement periods and the Quaternary glaciations. In the salt lakes and playas one usually observes preserved salt deposits formed in the Penultimate Glaciation and the Last Glaciation, and in some places there are salt deposits formed in the Xixiabangma Glaciation, the Wangkun Glaciation and the Zhonglianggan Glaciation; in the Qarhan Salt Lake in the eastern Qaidam Basin there are only salt deposits formed since the Last Glaciation. The dry and cold climate and the expansion of glacier during the glacial environment reduce the water supply in the salt lakes, which is favourable for the salt deposits.
【Fund】: 中国地质调查局地质调查项目(1212331413023);; 国家自然科学基金项目(U1407027)
【CateGory Index】: P548;P619.211;P534.63
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