Hydrothermal circulation at the Cleft-Vance overlapping spreading center : results of a magnetometric resistivity survey.

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Evans, Rob L., Webb, Spahr C., Jegen, Marion and Sananikone, Khamia (1998) Hydrothermal circulation at the Cleft-Vance overlapping spreading center : results of a magnetometric resistivity survey. Journal of Geophysical Research - Solid Earth, 103 (B6). pp. 12321-12338. DOI 10.1029/98JB00599.

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Abstract

We report on a magnetometric resistivity sounding carried out in the overlapping spreading center between the Cleft and Vance segments of the Juan de Fuca Ridge. The data collected reveal a strong three dimensionality in the crustal electrical resistivity structure on wavelengths of a few kilometers. Areas of reduced crustal electrical resistivities, with values approaching that of seawater, are seen beneath the neovolcanic zones of both active spreading centers. We interpret these reduced resistivities as evidence of active hydrothermal circulation within the uppermost 1 km of hot, young oceanic crust.

Document Type: Article
Keywords: Marine geology and geophysics: electromagnetics; Juan de Fuca Ridge; heat flow (benthic) and hydrothermal processes
Refereed: Yes
Open Access Journal?: No
Publisher: AGU (American Geophysical Union)
Date Deposited: 12 Dec 2012 09:44
Last Modified: 12 Apr 2018 12:07
URI: https://oceanrep.geomar.de/id/eprint/19654

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