首页|Correlated crustal and mantle melting documents proto-Tibetan Plateau growth

Correlated crustal and mantle melting documents proto-Tibetan Plateau growth

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The mechanism that causes the rapid uplift and active magmatism of the Hoh-Xil Basin in the northern Tibetan Plateau and hence the outward growth of the proto-plateau is highly debated,more specifically,over the relationship between deep dynamics and surface uplift.Until recently the Hoh-Xil Basin remained uncovered by seismic networks due to inaccessibility.Here,based on linear seismic arrays across the Hoh-Xil Basin,we present a three-dimensional S-wave velocity(Vs)model of the crust and uppermost mantle structure beneath the Tibetan Plateau from ambient noise tomography.This model exhibits a widespread partially molten crust in the northern Tibetan Plateau but only isolated pockets in the south manifested as low-Vs anomalies in the middle crust.The spatial correlation of the widespread low-Vs anomalies with strong uppermost mantle low-Vs anomalies and young exposed magmatic rocks in the Hoh-Xil Basin suggests that the plateau grew through lithospheric mantle removal and its driven magmatism.

S-wave velocityambient noise tomographypartial meltingTibetan PlateauHoh-Xil Basin

Wei Li、Rizheng He、Xiaohui Yuan、Felix Schneider、Frederik Tilmann、Zhen Guo、Yongshun John Chen

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School of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China

Deutsches Geo-ForschungsZentrum GFZ,Potsdam 14473,Germany

SinoProbe Laboratory,Chinese Academy of Geological Sciences,Beijing 100094,China

Freie Universität Berlin,Berlin 12249,Germany

Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaCentral Publicinterest Scientific Institution Basal Research FundCentral Publicinterest Scientific Institution Basal Research FundGeological Investigation ProjectGeological Investigation ProjectDFG Deutsche Forschungsgemeinschaftthe'CUG Scholar'Scientific Research Funds at China University of Geosciences(Wuhan)Sino-German(CSC-DAAD)Postdoc Scholarship

420741124171101169415740864127409542374110JKYZD202302JKY202221DD20230008DD202216433921492122022114

2024

国家科学评论(英文版)

国家科学评论(英文版)

CSTPCD
ISSN:
年,卷(期):2024.11(9)