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The Deformational Journey of the Nazca Slab From Seismic Anisotropy

Agrawal, Shubham; Eakin, Caroline; Portner, Daniel E.; Rodriguez, Emily E.; Beck, Susan L.


The Andean subduction zone is an excellent place to study deformation within a subducting slab as a function of depth, owing to the varying and well-resolved geometry of the subducting Nazca slab beneath South America. Here we combine the results of source-side shear wave splitting with the latest regional tomography model to isolate intraslab raypaths and determine the spatial distribution of anisotropy within the Nazca slab. We observe that in the upper mantle, the intraslab anisotropy...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Geophysical Research Letters
DOI: 10.1029/2020GL087398
Access Rights: Open Access


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