Convective removal of the Tibetan Plateau mantle lithosphere by similar to 26 Ma

doi:10.1016/j.tecto.2018.03.006

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Convective removal of the Tibetan Plateau mantle lithosphere by similar to 26 Ma
	Lu, Haijian 1,2; Tian, Xiaobo 3; Yun, Kun 4; Li, Haibing 1,2
刊名	TECTONOPHYSICS
	2018-04-22
卷号	731 页码:17-34
关键词	Geological events Near-synchroneity Late Oligocene-early Miocene Convective removal of mantle lithosphere Tibetan Plateau
ISSN号	0040-1951
DOI	10.1016/j.tecto.2018.03.006
文献子类	Review
英文摘要	During the late Oligocene-early Miocene there were several major geological events in and around the Tibetan Plateau (TP). First, crustal shortening deformation ceased completely within the TP before similar to 25 Ma and instead adakitic rocks and potassic-ultrapotassic volcanics were emplaced in the Lhasa terrane since 26-25 Ma. Several recent paleoelevation reconstructions suggest an Oligocene-early Miocene uplift of 1500-3000 m for the Qiangtang (QT) and Songpan-Ganzi (SG) terranes, although the exact timing is unclear. As a possible response to this uplift, significant desertification occurred in the vicinity of the TP at 26-22 Ma, and convergence between India and Eurasia slowed considerably at 26-20 Ma. Subsequently, E-W extension was initiated no later than 18 Ma in the Lhasa and QT terranes. In contrast, the tectonic deformation around the TP was dominated by radial expansion of shortening deformation since 25-22 Ma. The plateau-wide near-synchroneity of these events calls for an internally consistent model which can be best described as convective removal of the lower mantle lithosphere. Geophysical and petrochemical evidence further confirms that this extensive removal occurred beneath the QT and SG terranes. The present review concludes that, other than plate boundary stress, the internal stress within the TP lithosphere could have contributed to rapid wholesale uplift and a series of concomitant tectonic events, accompanied by major aridification, since similar to 26 Ma.
WOS关键词	INDIA-ASIA COLLISION ; EAST-WEST EXTENSION ; BENEATH SOUTHERN TIBET ; LOWER CRUSTAL FLOW ; HOH XIL BASIN ; CENOZOIC TECTONIC EVOLUTION ; THICKENED LOWER CRUST ; HI-CLIMB EXPERIMENT ; CHINESE TIEN-SHAN ; NORTHERN TIBET
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000431834600002
资助机构	National Natural Science Foundation of China(41472187) ; National Natural Science Foundation of China(41472187) ; China Geological Survey grant(DD20160022-03) ; China Geological Survey grant(DD20160022-03) ; National Natural Science Foundation of China(41472187) ; National Natural Science Foundation of China(41472187) ; China Geological Survey grant(DD20160022-03) ; China Geological Survey grant(DD20160022-03) ; National Natural Science Foundation of China(41472187) ; National Natural Science Foundation of China(41472187) ; China Geological Survey grant(DD20160022-03) ; China Geological Survey grant(DD20160022-03) ; National Natural Science Foundation of China(41472187) ; National Natural Science Foundation of China(41472187) ; China Geological Survey grant(DD20160022-03) ; China Geological Survey grant(DD20160022-03)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88280]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Lu, Haijian
作者单位	1.Minist Land & Resources, Key Lab Deep Earth Dynam, Beijing, Peoples R China 2.Chinese Acad Geol Sci, Inst Geol, Baiwanzhuang Rd 26, Beijing 10003Z, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Chengdu Univ Technol, Chengdu 610059, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Lu, Haijian,Tian, Xiaobo,Yun, Kun,et al. Convective removal of the Tibetan Plateau mantle lithosphere by similar to 26 Ma[J]. TECTONOPHYSICS,2018,731:17-34.
APA	Lu, Haijian,Tian, Xiaobo,Yun, Kun,&Li, Haibing.(2018).Convective removal of the Tibetan Plateau mantle lithosphere by similar to 26 Ma.TECTONOPHYSICS,731,17-34.
MLA	Lu, Haijian,et al."Convective removal of the Tibetan Plateau mantle lithosphere by similar to 26 Ma".TECTONOPHYSICS 731(2018):17-34.