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学科主题: 地球科学::地质学
题名: Intensified tectonic deformation and uplift of the Altyn Tagh range recorded by rock magnetism and growth strata studies of the western Qaidam Basin, NE Tibetan Plateau
作者: Zhang, T (Zhang, Tao)1; Han, WX (Han, Wenxia)2; Fang, XM (Fang, Xiaomin)1, 3; Zhang, WL (Zhang, Weilin)1, 3; Song, CH (Song, Chunhui)4, 5; Yan, MD (Yan, Maodu)1, 3
通讯作者: Fang, XM
刊名: GLOBAL AND PLANETARY CHANGE
发表日期: 2016
DOI: 10.1016/j.gloplacha.2015.12.017
卷: 137, 期:0, 页:54-68
收录类别: SCI
合作性质: 国内
文章类型: Article
英文摘要: As the tectonical and geographical northern edge of the Tibetan Plateau, the evolution of the Altyn Tagh range has attracted wide attention. Precise dating of its activities is believed essential for understanding the possible mechanisms of the Tibetan Plateau uplift and its effects on climate changes. Under the framework of basin-mountain coupling, both magnetic susceptibility and rock magnetic researches were carried out in this study on the Late Cenozoic sediments of the Honggouzi (HGZ) section (ca. 17-5 Ma) in the western Qaidam Basin to explore the tectonic and climatic evolution as well as their interactions of the Altyn Tagh range.
The obtained magnetic susceptibility record in the HGZ section displayed a two-step variation, which kept relatively low and stable values for sediments from the stratigraphic levels of 120-596 m (ca. 17-10 Ma) (stage I), but increased rapidly from 596 to 1014 m (ca. 10-5 Ma) (stage II). The rock magnetic results revealed that paramagnetic minerals or clay minerals, maghemite and hematite are dominant in stage I, which were replaced by magnetite and maghemite in stage II. A detailed comparison of magnetic susceptibility record in the HGZ section with regional tectonic and climate records was carried out. Combined with sedimentary facies, lithology and angular unconfarmity in the sequence, as well as seismostratigraphy data, paleocurrent and provenance analyses, the possible mechanisms for the magnetic susceptibility variation were explored. The results indicated a direct link between magnetic susceptibility change and the uplift of the Altyn Tagh range at ca. 10 Ma. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000370454700005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7765
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Sch Earth Sci, Lanzhou 730000, Peoples R China
5.Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Peoples R China

Recommended Citation:
Zhang, T ,Han, WX ,Fang, XM ,et al. Intensified tectonic deformation and uplift of the Altyn Tagh range recorded by rock magnetism and growth strata studies of the western Qaidam Basin, NE Tibetan Plateau[J]. GLOBAL AND PLANETARY CHANGE,2016,137(0):54-68.
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