Correlated crustal and mantle melting documents proto-Tibetan Plateau growth.

Autor: Li W; School of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China.; Deutsches GeoForschungsZentrum GFZ, Potsdam 14473, Germany., He R; SinoProbe Laboratory, Chinese Academy of Geological Sciences, Beijing 100094, China., Yuan X; Deutsches GeoForschungsZentrum GFZ, Potsdam 14473, Germany., Schneider F; Deutsches GeoForschungsZentrum GFZ, Potsdam 14473, Germany., Tilmann F; Deutsches GeoForschungsZentrum GFZ, Potsdam 14473, Germany.; Freie Universität Berlin, Berlin 12249, Germany., Guo Z; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China., Chen YJ; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
Jazyk: angličtina
Zdroj: National science review [Natl Sci Rev] 2024 Jul 26; Vol. 11 (9), pp. nwae257. Date of Electronic Publication: 2024 Jul 26 (Print Publication: 2024).
DOI: 10.1093/nsr/nwae257
Abstrakt: 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 (V S ) 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-V S anomalies in the middle crust. The spatial correlation of the widespread low-V S anomalies with strong uppermost mantle low-V S anomalies and young exposed magmatic rocks in the Hoh-Xil Basin suggests that the plateau grew through lithospheric mantle removal and its driven magmatism.
(© The Author(s) 2024. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.)
Databáze: MEDLINE
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