气候变化领域集成服务门户(CCPortal): New paleomagnetic constraints on syntectonic growth strata in the western Qaidam Basin, NE Tibetan Plateau

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DOI	10.1016/j.tecto.2020.228401
	New paleomagnetic constraints on syntectonic growth strata in the western Qaidam Basin, NE Tibetan Plateau
	Zhang W.; Appel E.; Fang X.; Setzer F.; Song C.; Meng Q.; Yan M.
发表日期	2020
ISSN	00401951
卷号	780
英文摘要	Accompanied by crustal shortening and mountain uplift caused by the large-magnitude south-north directed shortening under the collision between India and Eurasia, syntectonic growth strata in the western Qaidam Basin document important information about intense intracontinental deformation of the NE Tibetan Plateau. To better address the development of the Qaidam basin and the propagation of the growth strata associated with multiple tectonic uplifts of the Tibetan Plateau, we conducted a detailed paleomagnetic study on the late-Neogene fluvio-lacustrine sedimentary sequence exposed at two outcrop sections and a drill core in the western Qaidam Basin, and integrated the results with previous magnetostratigraphic studies. Based on well- determined ages of the centers and limbs of the two anticlines, we found an episodic late Cenozoic crustal shortening in the center of the western Qaidam Basin, as evidenced by syntectonic offlap growth strata deposited beginning at ~3.2 Ma. Combined with data from sedimentary facies and seismic profiles, we suggest that offlap growth strata progressively became younger from southwest to northeast in the center of the western Qaidam Basin due to strong basinward propagation of the eastern Kunlun fault and quick short-lived pulses of multiple tectonic uplifts of the NE Tibetan Plateau. © 2020
关键词	Growth strata NE Tibetan Plateau Paleomagnetism Qaidam Basin
英文关键词	Geomagnetism; Sedimentology; Tectonics; Crustal shortening; Growth strata; Ne tibetan plateaux; Paleomagnetism; Qaidam basin; Sedimentary facies; Sedimentary sequence; Western Qaidam basin; Core drilling; continental collision; crustal shortening; deformation; magnetostratigraphy; paleomagnetism; tectonic evolution; tectonic setting; uplift; China; Qaidam Basin; Qinghai
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207914
作者单位	CAS Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100010, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing, 100101, China; Department of Geosciences, University of Tübingen, Hölderlinstr. 12, Tübingen, D-72074, Germany; School of Earth Sciences & Key Laboratory of Western China's Mineral Resources of Gansu Province, Lanzhou University, Lanzhou, 730000, China
推荐引用方式 GB/T 7714	Zhang W.,Appel E.,Fang X.,et al. New paleomagnetic constraints on syntectonic growth strata in the western Qaidam Basin, NE Tibetan Plateau[J],2020,780.
APA	Zhang W..,Appel E..,Fang X..,Setzer F..,Song C..,...&Yan M..(2020).New paleomagnetic constraints on syntectonic growth strata in the western Qaidam Basin, NE Tibetan Plateau.Tectonophysics,780.
MLA	Zhang W.,et al."New paleomagnetic constraints on syntectonic growth strata in the western Qaidam Basin, NE Tibetan Plateau".Tectonophysics 780(2020).