Reports

Lehmann Discontinuity as the Base of an Anisotropic Layer Beneath Continents

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Science  09 Jun 1995:
Vol. 268, Issue 5216, pp. 1468-1471
DOI: 10.1126/science.268.5216.1468

Abstract

Long-period surface-wave (R1, G1), body-wave (S, SS, SSS), and ScS-reverberation data have been inverted to obtain anisotropic structures along seismic corridors that sample Australia and the western Pacific. These models support the proposal that the Lehmann discontinuity beneath stable continents represents a transition from an anisotropic lithosphere to a more isotropic material in the lower part of the continental tectosphere.