Late Miocene magnetostratigraphy of Jianzha Basin in thenortheastern margin of the Tibetan Plateau and changes in theEast Asian summer monsoon

doi:10.1002/gj.3047

	Late Miocene magnetostratigraphy of Jianzha Basin in thenortheastern margin of the Tibetan Plateau and changes in theEast Asian summer monsoon
	Fu, CF(Fu, Chaofeng)2,3; Qiang,XK(Qiang,Xiaoke)3; Xu,XW(Xu,Xinwen)1; Xi, JJ(Xi,Jianjian)2; Zuo,J(Zuo,Jun)2; An,ZS(An, Zhisheng)3; Fu, Chaofeng
刊名	Geological Journal
	2017-11
卷号	53 期号:S1 页码:282-292
关键词	East Asian Summer Monsoon Jianzha Basin Late Miocene Magnetostratigraphy Northeast Tibetplateau
DOI	10.1002/gj.3047
文献子类	期刊论文
英文摘要	Jianzha Basin is located in the northeastern Tibetan Plateau (NETP) and contains a thick sequence of Cenozoic sediments that are an archive of information about the growth of the Tibetan Plateau and the evolution of the arid environment of the interior of Asia. Here, we present magnetostratigraphic and palaeoenvironmental records from a 361‐m‐thick sequence of Late Cenozoic eolian Red Clay and intercalated fluviolacustrine deposits in the Jianzha Basin. The magnetostratigraphic results show that the sediments have recorded a continuous geomagnetic polarity sequence from C5r.3r to C3r, spanning the interval from 11.8 to 5.8 Ma in the Late Miocene. There are two intervals of rapidly fluctuating sedimentation rates between ~10 and ~6 Ma, which we interpret as a response to a series of uplifts and expansions to the north and to the east in the NETP. The fluctuations in Rb/Sr ratio and magnetic susceptibility before ~8.57 Ma reflect intensified East Asian summer monsoon (EASM) precipitation which resulted from the growth of the NETP. From ~8.57 to ~7.21 Ma, the EASM was impacted by global cooling and ice build‐up in the Northern Hemisphere in addition to the uplift of the Tibetan Plateau (TP) in the Late Miocene. From ~8.57 to ~7.21 Ma, there is a lack of coherency between the fluctuations in MS and Rb/Sr ratio; however, subsequently, there is significant coherency between the Rb/Sr ratio and the deep‐sea oxygen isotope record present. This suggests that from ~8.57 Ma, the eolian Red Clay sediments in the Jianzha Basin were significantly affected by the addition of dust derived from the deforming and uplifting areas of the TP.
项目编号	41772167 ; 41572164 ; 41140028 ; 40872114 ; 40599420 ; SKLLQG1601 ; 310827152014
语种	英语
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; StateKey Laboratory of Loess and QuaternaryGeology ; StateKey Laboratory of Loess and QuaternaryGeology ; Central University ResearchFoundation, Chang'an University ; Central University ResearchFoundation, Chang'an University
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5304]
专题	地球环境研究所_古环境研究室
通讯作者	Fu, Chaofeng
作者单位	1.College of Urban and Environmental Science,Northwest University, Xi'an, Shaanxi, China 2.The School of Earth Science and Resources,Chang'an University, Xi'an, Shaanxi, China 3.State Key Laboratory of Loess andQuaternary Geology, Institute of Earth andEnvironment, CAS, Xi'an, Shaanxi, China
推荐引用方式 GB/T 7714	Fu, CF,Qiang,XK,Xu,XW,et al. Late Miocene magnetostratigraphy of Jianzha Basin in thenortheastern margin of the Tibetan Plateau and changes in theEast Asian summer monsoon[J]. Geological Journal,2017,53(S1):282-292.
APA	Fu, CF.,Qiang,XK.,Xu,XW.,Xi, JJ.,Zuo,J.,...&Fu, Chaofeng.(2017).Late Miocene magnetostratigraphy of Jianzha Basin in thenortheastern margin of the Tibetan Plateau and changes in theEast Asian summer monsoon.Geological Journal,53(S1),282-292.
MLA	Fu, CF,et al."Late Miocene magnetostratigraphy of Jianzha Basin in thenortheastern margin of the Tibetan Plateau and changes in theEast Asian summer monsoon".Geological Journal 53.S1(2017):282-292.