柴达木盆地成盐期与青藏高原第四纪冰期及构造运动阶段的相关性

doi:10.3981/j.issn.1000-7857.2017.06.003

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摘要柴达木盆地沉积有巨厚的晚新生代沉积物和丰富的矿产资源，是研究晚新生代以来气候与环境变化、构造运动与盆地演化、成盐成矿规律的理想地区。通过对柴达木盆地钻孔和剖面的含盐地层测年数据进行总结，并与青藏高原第四纪冰川活动和构造运动进行对比，认为柴达木盆地成盐期与青藏高原第四纪冰期及构造运动阶段具有一定的对应关系。柴达木盆地西部盐湖和干盐湖中通常发育有倒数第二次冰期及末次冰期的石盐层，某些盐湖中还有希夏邦玛冰期、望昆冰期、中梁赣冰期的石盐层；迄今为止在柴达木盆地东部的察尔汗盐湖区中仅发现末次冰期以来的石盐层。冰期环境下的干冷气候及冰川扩张，造成盐湖补给水源的减少，有利于盐类物质的沉积。

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	陈安东
	郑绵平

关键词 ：柴达木盆地, 成盐期, 青藏高原构造运动, 第四纪冰期

Abstract：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.

Key words： Qaidam Basin salt deposit tectonic movement of Tibetan Platealu Quaternary glaciations

收稿日期: 2016-11-10

基金资助: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）

通讯作者: 郑绵平(通信作者),中国工程院院士,研究员,研究方向为盐类学与矿床地质学,电子信箱:zhengmp2010@126.com E-mail: zhengmp2010@126.com

作者简介: 陈安东,博士,研究方向为第四纪地质学,电子信箱:anton.chen@163.com

引用本文:

陈安东, 郑绵平. 柴达木盆地成盐期与青藏高原第四纪冰期及构造运动阶段的相关性[J]. 科技导报, 2017, 35(6): 36-41.
CHEN Andong, ZHENG Mianping. Salt-forming periods in the Qaidam Basin and their correlation with Quaternary glaciations and tectonic movements on the Tibetan Plateau. Science & Technology Review, 2017, 35(6): 36-41.

链接本文:

http://www.kjdb.org/CN/10.3981/j.issn.1000-7857.2017.06.003 或 http://www.kjdb.org/CN/Y2017/V35/I6/36

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