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Internal structure of ultralow-velocity zones consistent with origin from a basal magma ocean

Pachhai, Surya; Li, Mingming; Thorne, Michael S; Dettmer, Jan; Tkalčić, Hrvoje

Description

Seismological observations reveal patches of low-velocity anomalies at the core–mantle boundary known as ultralow-velocity zones. Despite recent advances, their origin and dynamic link to the lowermost mantle remain unclear. Here we employ seismic data analysis and high-resolution geodynamic modelling to study the origin of ultralow-velocity zones beneath the Coral Sea between Australia and New Zealand. The analysis of core-reflected waveforms with rigorous estimation of Bayesian uncertainties...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
URI: http://hdl.handle.net/1885/299520
Source: Nature Geoscience
DOI: 10.1038/s41561-021-00871-5

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