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Global observations of reflectors in the mid-mantle with implications for mantle structure and dynamics

Waszek, Lauren; Schmerr, Nicholas C; Ballmer, Maxim D

Description

Seismic tomography indicates that flow is commonly deflected in the mid-mantle. However, without a candidate mineral phase change, causative mechanisms remain controversial. Deflection of flow has been linked to radial changes in viscosity and/or composition, but a lack of global observations precludes comprehensive tests by seismically detectable features. Here we perform a systematic global-scale interrogation of mid-mantle seismic reflectors with lateral size 500–2000 km and depths...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
URI: http://hdl.handle.net/1885/160570
Source: Nature Communications
DOI: 10.1038/s41467-017-02709-4
Access Rights: Open Access

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