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dc.contributor.author Eakin, Caroline M.
dc.contributor.author Long, Maureen D.
dc.contributor.author Beck, Susan L.
dc.contributor.author Wagner, Lara S.
dc.contributor.author Tavera, Hernando
dc.contributor.author Condori Quispe, Cristobal
dc.coverage.spatial Perú
dc.date.accessioned 2018-09-11T19:32:39Z
dc.date.available 2018-09-11T19:32:39Z
dc.date.issued 2014-05-28
dc.identifier.citation Eakin, C. M., Long, M. D., Beck, S. L., Wagner, L. S., Tavera, H., & Condori, C. (2014). Response of the mantle to flat slab evolution: Insights from local S splitting beneath Peru.==$Geophysical Research Letters, 41$==(10), 3438-3446. https://doi.org/10.1002/2014GL059943 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2922
dc.description.abstract The dynamics of flat subduction, particularly the interaction between a flat slab and the overriding plate, are poorly understood. Here we study the (seismically) anisotropic properties and deformational regime of the mantle directly above the Peruvian flat slab. We analyze shear wave splitting from 370 local S events at 49 stations across southern Peru. We find that the mantle above the flat slab appears to be anisotropic, with modest average delay times (~0.28 s) that are consistent with ~4% anisotropy in a ~30 km thick mantle layer. The most likely mechanism is the lattice‐preferred orientation of olivine, which suggests that the observed splitting pattern preserves information about the mantle deformation. We observe a pronounced change in anisotropy along strike, with predominately trench‐parallel fast directions in the north and more variable orientations in the south, which we attribute to the ongoing migration of the Nazca Ridge through the flat slab system. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:0094-8276
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri https://creativecommons.org/licences/by/4.0/ es_ES
dc.subject Structural geology es_ES
dc.subject Subduction es_ES
dc.subject Anisotropía es_ES
dc.subject Seismic station es_ES
dc.subject Mantle es_ES
dc.title Response of the mantle to flat slab evolution: insights from local S splitting beneath Peru es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.00 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.04 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.06 es_ES
dc.identifier.journal Geophysical Research Letters es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/2014GL059943 es_ES

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