Imaging the Deep Seismic Structure Beneath a Mid-Ocean Ridge: The MELT Experiment-Reference-Cited by-同舟云学术

Imaging the Deep Seismic Structure Beneath a Mid-Ocean Ridge: The MELT Experiment

Published:1998-05-22 Issue:5367 Volume:280 Page:1215-1218
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Team The MELT Seismic¹²³⁴⁵

Affiliation:

1. D. W. Forsyth* and D. S. Scheirer, Department of Geological Sciences, Brown University, Providence, RI 02912, USA.

2. S. C. Webb, L. M. Dorman, J. A. Orcutt, A. J. Harding, D. K. Blackman, J. Phipps Morgan, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA.

3. R. S. Detrick, Y. Shen, C. J. Wolfe, J. P. Canales, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA.

4. D. R. Toomey, Department of Geological Sciences, University of Oregon, Eugene, OR 97403, USA.

5. A. F. Sheehan, Department of Geological Sciences and Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO 80309, USA.

Abstract

The Mantle Electromagnetic and Tomography (MELT) Experiment was designed to distinguish between competing models of magma generation beneath mid-ocean ridges. Seismological observations demonstrate that basaltic melt is present beneath the East Pacific Rise spreading center in a broad region several hundred kilometers across and extending to depths greater than 100 kilometers, not just in a narrow region of high melt concentration beneath the spreading center, as predicted by some models. The structure of the ridge system is strongly asymmetric: mantle densities and seismic velocities are lower and seismic anisotropy is stronger to the west of the rise axis.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference30 articles.

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