A fluid model for the shape of accretionary wedges

Details A fluid model for the shape of accretionary wedges A fluid model for the shape of accretionary wedges

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..63..379e&link_type=abstract

Earth and Planetary Science Letters, Volume 63, Issue 3, p. 379-384.

Physics

30

Scientific paper

In this paper the accretionary wedges landward of most oceanic trenches are modelled assuming a Newtonian fluid rheology.It is shown that lubrication theory is applicable and that the addition of material to the wedges can be neglected in determining the shape of the wedges. The predicted shape of the wedges is in good agreement with bathymetric profiles across the Kurile, Ryukyu and Aleutian wedges. From the shape of the above wedges, it is deduced that accretionary sediments have viscosities between 1018 and 1019 poise.

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