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

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doi: 10.1029/2012GC004260
Author(s): 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; Wang Fei
Author Affiliation(s): Primary:
University of California at Berkeley, Department of Earth and Planetary Science, Berkeley, CA, United States
Southern Methodist University, United States
Universite Paris Diderot, France
Geological Survey of Japan, Japan
Texas A&M University, United States
Yamagata University, Japan
Florida State University, United States
Freiberg University of Mining and Technology, Germany
University of Massachusetts at Amherst, United States
Ibaraki University, Japan
Oregon State University, United States
University of Otago, New Zealand
Niigata University, Japan
University of Tokyo, Japan
University of South Florida, United States
Tufts University, United States
University of Leicester, United Kingdom
University of Southampton, United Kingdom
Shinshu University, Japan
Lamont-Doherty Earth Observatory, United States
Montserrat Volcano Observatory, Montserrat
National Geophysical Research Institute, India
Japan Agency for Marine-Earth Science and Technology, Japan
University Pierre et Marie Curie, France
Plymouth University, United Kingdom
Chinese Academy of Sciences, Institute of Geology and Geophysics, China
Volume Title: Geochemistry, Geophysics, Geosystems - G<sup>3</sup>
Source: Geochemistry, Geophysics, Geosystems - G>3`, 13(8). Publisher: American Geophysical Union and The Geochemical Society, United States. ISSN: 1525-2027
Note: In English. Includes appendices. 112 refs.; illus., incl. 4 tables, sketch map
Summary: 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.
Year of Publication: 2012
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; Antilles; Back-arc basins; Basins; Caribbean region; Grenada Basin; Guadeloupe; Heat flow; Integrated Ocean Drilling Program; Island arcs; Lesser Antilles; Marine sedimentation; Montserrat Island; Numerical analysis; Sedimentation; Volcanic belts; Volcanism; West Indies
Coordinates: N110000 N180000 W0580000 W0660000
Record ID: 2013081603
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom, Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union