气候变化领域集成服务门户(CCPortal): Magnetostratigraphy of drill-core SG-1b in the western Qaidam Basin (NE Tibetan Plateau) and tectonic implications

CCPortal

DOI	10.1093/gji/ggt439
	Magnetostratigraphy of drill-core SG-1b in the western Qaidam Basin (NE Tibetan Plateau) and tectonic implications
	Zhang, Weilin; Appel, Erwin; Fang, Xiaomin; Song, Chunhui; Setzer, Fabian; Herb, Christian; Yan, Maodu
通讯作者	Zhang, WL (通讯作者)
发表日期	2014
ISSN	0956-540X
EISSN	1365-246X
起始页码	90
结束页码	118
卷号	197 期号:1
英文摘要	The Qaidam Basin is an ideal archive to study long-term climate and erosion histories at the NE Tibetan Plateau. We present a magnetostratigraphic study of the 723 m deep drill-core SG-1b of lacustrine sediments at the Jianshan anticline in the western Qaidam Basin. The polarity sequence shows 18 normal and 19 reverse polarity zones which can be readily correlated with chrons C1n-C3Br of the Geomagnetic Polarity Time Scale 2004 (GPTS 2004), dating the core at about 7.3-1.6 Ma. The resulting mean sediment accumulation rate (SAR) between polarity boundaries ranges from 6.5 to 30.4 cm ka(-1). High SARs occur within the intervals of > 7.3-6.0, 5.2-4.2 and 3.6-2.6 Ma indicating three episodic phases of higher erosion. From the derived variation of SARs and previous results, we conclude that growth strata at the Jianshan anticline started to develop at similar to 1.6 Ma by limb rotation. All this we relate to pulse tectonic uplift of the NE Tibetan Plateau and fault-propagation-folding in the Qaidam Basin.
关键词	ALTYN-TAGH FAULT RESOLUTION MAGNETO STRATIGRAPHY GYROREMANENT MAGNETIZATION CENOZOIC DEFORMATION SECTION RESTORATION QINGHAI PROVINCE NORTHERN MARGIN NW CHINA EVOLUTION UPLIFT
英文关键词	Magnetostratigraphy; Palaeomagnetism applied to tectonics; Continental tectonics: compressional
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000334096600007
来源期刊	GEOPHYSICAL JOURNAL INTERNATIONAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258326
推荐引用方式 GB/T 7714	Zhang, Weilin,Appel, Erwin,Fang, Xiaomin,et al. Magnetostratigraphy of drill-core SG-1b in the western Qaidam Basin (NE Tibetan Plateau) and tectonic implications[J]. 中国科学院青藏高原研究所,2014,197(1).
APA	Zhang, Weilin.,Appel, Erwin.,Fang, Xiaomin.,Song, Chunhui.,Setzer, Fabian.,...&Yan, Maodu.(2014).Magnetostratigraphy of drill-core SG-1b in the western Qaidam Basin (NE Tibetan Plateau) and tectonic implications.GEOPHYSICAL JOURNAL INTERNATIONAL,197(1).
MLA	Zhang, Weilin,et al."Magnetostratigraphy of drill-core SG-1b in the western Qaidam Basin (NE Tibetan Plateau) and tectonic implications".GEOPHYSICAL JOURNAL INTERNATIONAL 197.1(2014).