Episodic melt transport at mid-ocean ridges inferred from magnetotelluric sounding

Details Episodic melt transport at mid-ocean ridges inferred from magnetotelluric sounding Episodic melt transport at mid-ocean ridges inferred from magnetotelluric sounding

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2317h&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 15, p. 2317-2320

Physics

Geophysics

12

Marine Geology And Geophysics: Geomagnetism, Marine Geology And Geophysics: Midocean Ridge Processes

Scientific paper

Oceanic crust is generated at mid-ocean ridges by decompression melting of upwelling mantle at depths of between 50 and 120 km. Geodynamic and geochemical models of upwelling, melt extraction, and melt emplacement into crustal magma reservoirs present a variety of possible migration geometries, most of which assume steady-state or near steady-state processes. Here we present results from marine magnetotelluric (MT) measurements, carried out as part of the RAMESSES experiment on the slow spreading Reykjanes Ridge, which support a model of melt extraction and migration that is episodic, rather than steady-state.

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