Computer Science
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..99..118r&link_type=abstract
Earth and Planetary Science Letters, Volume 99, Issue 1-2, p. 118-126.
Computer Science
16
Scientific paper
A deep seismic reflection profile on the continental rise off eastern Canada shows strong dipping reflections, apparently from within lower oceanic crust, over a region of limited lateral extent. The origin of these and similar reflections described elsewhere is uncertain. This paper reports new seismic-refraction results from the region of these reflections. They appear to be associated with a layer of P-wave velocity of about 7.4 km s-1 or higher, while the surrounding crust has a velocity ~ 7 km s-1. The Moho, with velocity 8.1 km s-1, lies just below the reflectors, and the total crustal thickness is around 8 km. The crust is interpreted to be oceanic rather than continental, and the high velocities of the dipping reflectors are comparable to those of the mafic/ultramafic crust-mantle transition zone in the Bay of Islands ophiolite complex.
Keen Charlotte E.
Reid I. D.
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