<i>S</i> wave Velocity Structure of the Crust and Upper Mantle Beneath Shanxi Rift, Central North China Craton and its Tectonic Implications

نویسندگان

چکیده

The Shanxi rift is located in the central part of North China Craton (NCC). With strong tectonic deformation and intense seismic activity, its crust-mantle deep structure have always attracted wide attention. Using teleseismic events observed a dense network 610 temporary 127 permanent stations NCC, we obtained S wave velocity structures by joint inversion method receiver functions surface dispersion data. Our results show that crust thickens northern (41 km) thins southern (35 km). Taiyuan Linfen basins, part, high-velocity zones lower upper mantle; beneath Yuncheng basin south, there are low-velocity uppermost mantle (30–80 km); Datong basin, rift, exhibits range anomalies middle to mantle. We speculate destruction NCC associated lithospheric thinning had significant impact on but still early stage which retains most craton features. An upwelling asthenospheric magma occurred western basin. horizontal deflection flow causes surrounding area, consistent with LAB topography.

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ژورنال

عنوان ژورنال: Tectonics

سال: 2021

ISSN: ['0278-7407', '1944-9194']

DOI: https://doi.org/10.1029/2020tc006239