New Hebrides trench: subduction rate from associated lithospheric bulge

1 February 1977

journal article
Published by Canadian Science Publishing in Canadian Journal of Earth Sciences

Vol. 14 (2) , 250-255
https://doi.org/10.1139/e77-026

Abstract

We present new data on the lithospheric bulge in the vicinity of the Loyalty and New Hebrides Islands, and attempt to interpret the difference of the topographic profile of the outer wall of the New Hebrides trench from a theoretical profile. The free edge of the lithospheric plate appears to correspond to a line of maximum seismic strain release. The uplift rate and consequently the subduction rate have been calculated from studies of the dynamic aspect of the bulge and from ²³⁰Th/²³⁴U ages of raised coral terraces.

Keywords

NEW HEBRIDES
HEBRIDES TRENCH
SUBDUCTION RATE
LITHOSPHERIC BULGE
ASSOCIATED LITHOSPHERIC

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