DOI: 10.1016/j.gloplacha.2015.12.017
论文题名: 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. ; Han W. ; Fang X. ; Zhang W. ; Song C. ; Yan M.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2016
卷: 137 起始页码: 54
结束页码: 68
语种: 英语
英文关键词: Altyn Tagh range
; Growth strata
; Qaidam Basin
; Rock magnetism
; Tectonic uplift
Scopus关键词: Climate change
; Geochronology
; Lithology
; Magnetic susceptibility
; Rocks
; Stratigraphy
; Tectonics
; Altyn Tagh range
; Growth strata
; Qaidam basin
; Rock magnetism
; Tectonic uplift
; Magnetism
; Cenozoic
; clay mineral
; climate change
; deformation mechanism
; facies
; growth fault
; hematite
; lithology
; maghemite
; magnetic susceptibility
; magnetite
; paleocurrent
; provenance
; proxy climate record
; rock property
; sediment analysis
; seismic stratigraphy
; tectonic evolution
; tectonostratigraphy
; uplift
; Altun Mountains
; China
; Qaidam Basin
; Qinghai
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 unconformity 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. © 2015 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961299405&doi=10.1016%2fj.gloplacha.2015.12.017&partnerID=40&md5=af381608f3f90eb50bf4de88811f9d48
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11717
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, CAS, Beijing, China
Recommended Citation:
Zhang T.,Han W.,Fang X.,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,2016-01-01,137.