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The effect of slab gaps on subduction dynamics and mantle upwelling

Kiraly, Agnes; Portner, Daniel E.; Haynie, Kirstie L.; Chilson-Parks, Benjamin H.; Ghosh, Tithi; Jadamec, Margarete; Makushkina, Anna; Manga, Michael; Moresi, Louis; O'Farrell, Keely A.


Gaps within a subducting plate can alter the surrounding mantle flow field and the overall subduction zone dynamics by allowing hot sub-slab mantle to flow through the gaps and into the mantle wedge. This through-slab flow can produce melting of the slab gap edges as well as significant upwelling that can lead to anomalous alkaline volcanism and/or dynamic uplift in the overriding plate, while the altered mantle flow patterns affect the trench evolution. Numerous geodynamic models have...[Show more]

CollectionsANU Research Publications
Date published: 2020-04-23
Type: Journal article
Source: Tectonophysics
DOI: 10.1016/j.tecto.2020.228458
Access Rights: Open Access


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