Seismological evidence for metastable olivine inside a subducting slab

Details Seismological evidence for metastable olivine inside a subducting slab Seismological evidence for metastable olivine inside a subducting slab

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.356..593i&link_type=abstract

Nature (ISSN 0028-0836), vol. 356, no. 6370, April 16, 1992, p. 593-595. Research supported by MOESC.

Physics

50

Earthquakes, Olivine, Plates (Tectonics), Seismology, Subduction (Geology), Phase Transformations, Seismograms, Slabs, Spinel

Scientific paper

Time-travel residuals from deep earthquakes recorded by the dense seismograph network in Japan are used here to investigate the configuration of the olivine-spinel phase boundary inside the subducting Pacific plate. Theoretical travel-time residuals for the equilibrium model do not fit the observed residuals, whereas those for the metastable model do, implying the presence of metastable olivine inside the subducting slab.

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