Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography
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2017
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He, C.
Santosh, M.
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Solid Earth, 2017; 8(6):1141-1151
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Chuansong He and M. Santosh
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The voluminous magmatism associated with large igneous provinces (LIPs) is commonly correlated to up-welling plumes from the core–mantle boundary (CMB). Here we analyse seismic tomographic data from the Emeishan LIP in southwestern China. Our results reveal vestiges of delaminated crustal and/or lithospheric mantle, with an upwelling in the upper mantle beneath the Emeishan LIP rather than a plume rooted in the CMB. We suggest that the magmatism and the Emeishan LIP formation might be connected with the melting of delaminated lower crustal and/or lithospheric components which resulted in plume-like upwelling from the upper mantle or from the mantle transition zone.
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© Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License.