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


Manga, M and Hornbach, MJ and Le Friant, A and Ishizuka, O and Stroncik, N and Adachi, T and Aljahdali, M and Boudon, G and Breitkreuz, C and Fraass, A and Fujinawa, A and Hatfield, R and Jutzeler, M and Kataoka, K and Lafuerza, S and Maeno, F and Martinez-Colon, M and McCanta, M and Morgan, S and Palmer, MR and Saito, T and Slagle, A and Stinton, AJ and Subramanyam, KSV and Tamura, Y and Talling, PJ and Villemant, B and Wall-Palmer, D and Wang, F, Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin, Geochemistry, Geophysics, Geosystems, 13, (8) Article Q08007. ISSN 1525-2027 (2012) [Refereed Article]


Copyright Statement

Copyright 2012 American Geophysical Union

DOI: doi:10.1029/2012GC004260


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.

Item Details

Item Type:Refereed Article
Keywords:IODP 340
Research Division:Earth Sciences
Research Group:Geology
Research Field:Volcanology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:Jutzeler, M (Dr Martin Jutzeler)
ID Code:107549
Year Published:2012
Web of Science® Times Cited:34
Deposited By:Earth Sciences
Deposited On:2016-03-17
Last Modified:2017-10-30
Downloads:184 View Download Statistics

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