Variations in crustal structure on the East Pacific Rise crest: A travel time inversion approach

Details Variations in crustal structure on the East Pacific Rise crest: A travel time inversion approach Variations in crustal structure on the East Pacific Rise crest: A travel time inversion approach

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..34..439k&link_type=abstract

Earth and Planetary Science Letters, Volume 34, Issue 3, p. 439-444.

Physics

2

Scientific paper

Systematic travel time inversion techniques have been applied to first arrival travel times from a number of seismic refraction profiles on the crest and flanks of the East Pacific Rise to generate bounds on the possible velocity-depth distributions. The greatest variability in structure occurs within 5 Myr of the rise crest. The generally similar character of the bounds on the velocity distributions for ages greater than 5 Myr indicates that the most rapid aging occurs within 5 Myr of the crest, though the mantle velocity increases systematically with age. The nature of the bounds on the velocity distribution for the range of velocities associated with layer 3 requires that the velocity distribution within layer 3 increase with depth.

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