Abstract
It is an axiom of plate tectonics that lithospheric plates are to a good approximation torsionally rigid, that is, inextensible in the ‘plane’ of the plate1–3. Although few scientists would question this assumption when it is applied to oceanic lithosphere at the Earth's surface, there is no consensus as to whether or not oceanic lithosphere maintains its mechanical integrity during subduction (com-pare refs 4–7 with refs 8–11). I show here that the shapes of many Wadati-Bemoff zones are inconsistent with the notion that they manifest subducted portions of oceanic plates subject only to very small (≲1%) membrane strains.
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References
McKenzie, D. P. & Parker, R. L. Nature 216, 1276–1280 (1967).
Morgan, W. J. J. geophys. Res. 73, 1959–1982 (1968).
Le Pichon, X. et al. Plate Tectonics (Elsevier, Amsterdam, 1973).
Elsasser, W. M. in The Application of Modern Physics to Earth and Planetary Interiors (ed. Runcorn, S. K.) 223–246 (Wiley, New York, 1967).
Isacks, B. L. et al. J. geophys. Res. 73, 5855–5899 (1968).
Frank, F. Nature 220, 363 (1968).
Bevis, M. & Isacks, B. L. J. geophys. Res. 89, 6153–6170 (1984).
Ringwood, A. E. & Green, D. H. Tectonophysics 3, 383–427 (1966).
Kanamori, H. Tectonophysics 12, 187–198 (1971).
Stoiber, R. E. & Carr, M. J. Bull. volc. 37, 304–325 (1973).
Freund, R. et al. Mechanisms of Continental Drift and Plate Tectonics (eds Davies, P. A & Runcorn, S. K.) 17–39 (Academic, London, 1980).
Jellett, J. H. Trans. R. Ir. Acad. 22, 343–377 (1855).
Stoker, J. J. Differential Geometry (Wiley, New York, 1969).
Isacks, B. L. & Barazangi, M. in Island Arcs, Deep Sea Trenches and Back-Arc Basins (eds Talwani, M. & Pitman, W.) 99–114 (American Geophysical Union, Washington, 1977).
Espinosa, A. F. et al. Seismicity of the Earth 1960–1980 (Marie Tharp, Oceanographic Cartographer, South Nyack, 1981).
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Bevis, M. The curvature of Wadati-Benioff zones and the torsional rigidity of subducting plates. Nature 323, 52–53 (1986). https://doi.org/10.1038/323052a0
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DOI: https://doi.org/10.1038/323052a0
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