Manga&Jutzeler Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada Basin 2012.pdf (731.34 kB)
Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin
journal contribution
posted on 2023-05-18, 18:01 authored by Manga, M, Hornbach, MJ, Le Friant, A, Ishizuka, O, Stroncik, N, Adachi, T, Aljahdali, M, Boudon, G, Breitkreuz, C, Fraass, A, Fujinawa, A, Hatfield, R, Martin JutzelerMartin Jutzeler, Kataoka, K, Lafuerza, S, Maeno, F, Martinez-Colon, M, McCanta, M, Morgan, S, Palmer, MR, Saito, T, Slagle, A, Stinton, AJ, Subramanyam, KSV, Tamura, Y, Talling, PJ, Villemant, B, Wall-Palmer, D, Wang, FUsing 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.
History
Publication title
Geochemistry, Geophysics, GeosystemsVolume
13Issue
8Article number
Q08007Number
Q08007Pagination
1-19ISSN
1525-2027Department/School
School of Natural SciencesPublisher
Amer Geophysical UnionPlace of publication
2000 Florida Ave Nw, Washington, USA, Dc, 20009Rights statement
Copyright 2012 American Geophysical UnionRepository Status
- Open