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Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin

Manga, Michael, Hornbach, Matthew J., Le Friant, Anne, Ishizuka, Osamu, Stroncik, Nicole, Adachi, Tatsuya, Aljahdali, Mohammed, Boudon, Georges, Breitkreuz, Christoph, Fraass, Andrew, Fujinawa, Akihiko, Hatfield, Robert, Jutzeler, Martin, Kataoka, Kyoko, Lafuerza, Sara, Maeno, Fukashi, Martinez-Colon, Michael, McCanta, Molly, Morgan, Sally, Palmer, Martin R., Saito, Takeshi, Slagle, Angela, Stinton, Adam J., Subramanyam, K.S.V., Tamura, Yoshihiko, Talling, Peter J., Villemant, Benoit, Wall-Palmer, Deborah and Wang, Fei (2012) Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin Geochemistry Geophysics Geosystems, 13, Q08007. (doi:10.1029/2012GC004260).

Record type: Article

Abstract

Using temperature gradients measured in 10 holes at 6 sites, we generate the first high fidelity heat flow measurements from Integrated Ocean Drilling Program drill holes across the northern and central Lesser Antilles arc and back arc Grenada basin. The implied heat flow, after correcting for bathymetry and sedimentation effects, ranges from about 0.1 W/m2 on the crest of the arc, midway between the volcanic islands of Montserrat and Guadeloupe, to <0.07 W/m2 at distances >15 km from the crest in the back arc direction. Combined with previous measurements, we find that the magnitude and spatial pattern of heat flow are similar to those at continental arcs. The heat flow in the Grenada basin to the west of the active arc is 0.06 W/m2, a factor of 2 lower than that found in the previous and most recent study. There is no thermal evidence for significant shallow fluid advection at any of these sites. Present-day volcanism is confined to the region with the highest heat flow.

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Published date: 2012
Organisations: Geochemistry, Marine Geoscience

Identifiers

Local EPrints ID: 343413
URI: http://eprints.soton.ac.uk/id/eprint/343413
ISSN: 1525-2027
PURE UUID: a4474dea-b57e-4e69-9808-2ba03f150a9c

Catalogue record

Date deposited: 02 Oct 2012 15:36
Last modified: 18 Jul 2017 05:22

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Contributors

Author: Michael Manga
Author: Matthew J. Hornbach
Author: Anne Le Friant
Author: Osamu Ishizuka
Author: Nicole Stroncik
Author: Tatsuya Adachi
Author: Mohammed Aljahdali
Author: Georges Boudon
Author: Christoph Breitkreuz
Author: Andrew Fraass
Author: Akihiko Fujinawa
Author: Robert Hatfield
Author: Martin Jutzeler
Author: Kyoko Kataoka
Author: Sara Lafuerza
Author: Fukashi Maeno
Author: Michael Martinez-Colon
Author: Molly McCanta
Author: Sally Morgan
Author: Takeshi Saito
Author: Angela Slagle
Author: Adam J. Stinton
Author: K.S.V. Subramanyam
Author: Yoshihiko Tamura
Author: Peter J. Talling
Author: Benoit Villemant
Author: Deborah Wall-Palmer
Author: Fei Wang

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