Imaging the deep seismic structure beneath a mid-ocean ridge: the MELT experiment
نویسنده
چکیده
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.
منابع مشابه
Imaging the Deep Seismic Structure Beneath a Mid-Ocean Ridge: The MELT Experiment
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 na...
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ورودعنوان ژورنال:
- Science
دوره 280 5367 شماره
صفحات -
تاریخ انتشار 1998