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

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DOI	10.1016/j.yqres.2012.03.011
	Magnetostratigraphy of deep drilling core SG-1 in the western Qaidam Basin (NE Tibetan Plateau) and its tectonic implications
	Zhang, Weilin; Appel, Erwin; Fang, Xiaomin; Song, Chunhui; Cirpka, Olaf
通讯作者	Fang, XM (通讯作者)
发表日期	2012
ISSN	0033-5894
EISSN	1096-0287
起始页码	139
结束页码	148
卷号	78 期号:1
英文摘要	The Qaidam Basin is the largest intermontane basin of the northeastern Tibetan Plateau and contains a continuous Cenozoic sequence of lacustrine sediments. A similar to 1000-m-deep drilling (SG-1) with an average core recovery of similar to 95% was carried out in the depocenter of the Chahansilatu playa (sub-depression) in the western Qaidam Basin, aimed to obtain a high-resolution record of the paleoenvironmental evolution and the erosion history. Stepwise alternating field and thermal demagnetization, together with rock magnetic results, revealed a stable remanent magnetization for most samples, carried by magnetite. The polarity sequence consisted of 16 normal and 15 reverse zones which can be correlated with chrons in to 2An of the global geomagnetic polarity time scale. Magnetostratigraphic results date the entire core SG-1 at similar to 2.77 Ma to similar to 0.1 Ma and yielded sediment accumulation rate (SAR) ranging from 26.1 cm/ka to 51.5 cm/ka. Maximum SARs occurred within the intervals of similar to 2.6-2.2 Ma and after similar to 0.8 Ma, indicating two episodes of erosion, which we relate to pulse tectonic uplift of the NE Tibetan Plateau with subsequent global cooling. (C) 2012 University of Washington. Published by Elsevier Inc. All rights reserved.
关键词	RESOLUTION MAGNETO STRATIGRAPHY ASTRONOMICAL CALIBRATION PALEOMAGNETIC EVIDENCE CENOZOIC DEFORMATION GEOMAGNETIC-FIELD QINGHAI PROVINCE GUIDE BASIN UPLIFT CHINA EVOLUTION
英文关键词	Magnetostratigraphy; Tectonic evolution; Qaidam Basin; Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000306096200014
来源期刊	QUATERNARY RESEARCH
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/258045
推荐引用方式 GB/T 7714	Zhang, Weilin,Appel, Erwin,Fang, Xiaomin,et al. Magnetostratigraphy of deep drilling core SG-1 in the western Qaidam Basin (NE Tibetan Plateau) and its tectonic implications[J]. 中国科学院青藏高原研究所,2012,78(1).
APA	Zhang, Weilin,Appel, Erwin,Fang, Xiaomin,Song, Chunhui,&Cirpka, Olaf.(2012).Magnetostratigraphy of deep drilling core SG-1 in the western Qaidam Basin (NE Tibetan Plateau) and its tectonic implications.QUATERNARY RESEARCH,78(1).
MLA	Zhang, Weilin,et al."Magnetostratigraphy of deep drilling core SG-1 in the western Qaidam Basin (NE Tibetan Plateau) and its tectonic implications".QUATERNARY RESEARCH 78.1(2012).