Mantle transition zone thinning beneath eastern Africa: Evidence for a whole-mantle superplume structure

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dc.contributor.authorMulibo G.D., and Nyblade A.A
dc.date.accessioned2021-04-20T14:18:13Z
dc.date.available2021-04-20T14:18:13Z
dc.date.issued2013-08-22
dc.description.abstract[1] P to S conversions from the 410 and 660 km discontinuities observed in receiver function stacks reveal a mantle transition zone that is ~30–40 km thinner than the global average in a region ~200–400 km wide extending in a SW-NE direction from central Zambia, across Tanzania and into Kenya. The thinning of the transition zone indicates a ~190–300K thermal anomaly in the same location where seismic tomography models suggest that the lower mantle African superplume structure connects to thermally perturbed upper mantle beneath eastern Africa. This finding provides compelling evidence for the existence of a continuous thermal structure extending from the core-mantle boundary to the surface associated with the African superplume.en_US
dc.description.sponsorshipThis study was funded by the National Science Foundation (grants OISE-0530062, EAR-0440032, EAR-0824781).en_US
dc.identifier.citationMulibo, G. D., and A. A. Nyblade (2013), Mantle transition zone thinning beneath eastern Africa: Evidence for a whole-mantle superplume structure, Geophys. Res. Lett., 40, doi:10.1002/grl.50694.en_US
dc.identifier.doidoi.org/10.1002/grl.50694.
dc.identifier.urihttp://hdl.handle.net/20.500.11810/5645
dc.language.isoenen_US
dc.publisherWileyen_US
dc.titleMantle transition zone thinning beneath eastern Africa: Evidence for a whole-mantle superplume structureen_US
dc.typeJournal Article, Peer Revieweden_US
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