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Global azimuthal seismic anisotropy and the unique plate-motion deformation of Australia

Debayle, E; Kennett, Brian; Priestley, K


Differences in the thickness of the high-velocity lid underlying continents as imaged by seismic tomography, have fuelled a long debate on the origin of the 'roots' of continents1-5. Some of these differences may be reconciled by observations of radial anisotropy between 250 and 300 km depth, with horizontally polarized shear waves travelling faster than vertically polarized ones2. This azimuthally averaged anisotropy could arise from present-day deformation at the base of the plate, as has...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Nature
DOI: 10.1038/nature03247


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