Global correlations of mid-ocean-ridge basalt chemistry with seismic tomographic images

Details Global correlations of mid-ocean-ridge basalt chemistry with seismic tomographic images Global correlations of mid-ocean-ridge basalt chemistry with seismic tomographic images

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.364..225h&link_type=abstract

Nature (ISSN 0028-0836), vol. 364, no. 6434, p. 225-228.

Computer Science

17

Basalt, Geochemistry, Mid-Ocean Ridges, Seismology, Tomography, Chemical Composition, Correlation Coefficients, Geodynamics, Image Analysis

Scientific paper

An examination is conducted of the global covariation between midocean-ridge basalt chemistry and upper-mantle shear-wave velocity. There is a strong correlation between basalt chemistry and seismic velocity variations at 100-170 km depths, and lateral scale-lengths of 1.0-2.4 km; this lends support to a hypothesized common thermal origin for the two signal types. Points which depart from the general correlation may identify interesting anomalies deserving of further study.

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