气候变化领域集成服务门户(CCPortal): Active construction of southernmost Tibet revealed by deep seismic imaging

CCPortal

DOI	10.1038/s41467-022-30887-3
	Active construction of southernmost Tibet revealed by deep seismic imaging
	Lu, Zhanwu; Guo, Xiaoyu; Gao, Rui; Murphy, Michael Andrew; Huang, Xingfu; Xu, Xiao; Li, Sanzhong; Li, Wenhui; Zhao, Junmeng; Li, Chunsen; Xiang, Bo
通讯作者	Guo, XY (通讯作者)
发表日期	2022
EISSN	2041-1723
卷号	13 期号:1
英文摘要	Southernmost Tibet exhibits an anomalously twice the normal thickness of average continental crust. There is no available theory to explain and the driving mechanism remains uncertain. Here, we interpret a north-striking, 180 km-long deep seismic reflection profile traversing the southern Lhasa terrane (SLT) to the central Lhasa terrane (CLT). In addition to reflections showing subducting Indian crust, our results reveal lateral heterogeneity between the SLT and CLT, where north-dipping reflections beneath the CLT outline a tilted crystalline basement, while the non-reflective domain beneath the SLT represents homogeneous juvenile crust. Our integrated analysis leads to models calling upon episodic magmatism onto the southern margin of the basement to result in progressive construction of the SLT. We hypothesize that this crustal thickening via crustal-scale magma accretion contributed to surface uplift of the southern margin of the Tibetan plateau and leading to the development of the vast internal drainage system of Tibet. Mechanism driving continental growth on modern Earth has long been debated. By interpreting the long deep seismic reflection data across the ongoing India-Eurasia collision zone, the authors report crustal-scale magma accretion onto the south of central Lhasa terrane produced net continental growth.
关键词	LINZIZONG VOLCANIC SUCCESSION CONTINENTAL COLLISION ZONES TECTONIC EVOLUTION CRUST GROWTH SUTURE ZONE REFLECTION LITHOSPHERE MAGMATISM DEPOSITS HIMALAYA
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000808000200027
来源期刊	NATURE COMMUNICATIONS
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/260752
推荐引用方式 GB/T 7714	Lu, Zhanwu,Guo, Xiaoyu,Gao, Rui,et al. Active construction of southernmost Tibet revealed by deep seismic imaging[J]. 中国科学院青藏高原研究所,2022,13(1).
APA	Lu, Zhanwu.,Guo, Xiaoyu.,Gao, Rui.,Murphy, Michael Andrew.,Huang, Xingfu.,...&Xiang, Bo.(2022).Active construction of southernmost Tibet revealed by deep seismic imaging.NATURE COMMUNICATIONS,13(1).
MLA	Lu, Zhanwu,et al."Active construction of southernmost Tibet revealed by deep seismic imaging".NATURE COMMUNICATIONS 13.1(2022).