Heat flow in the Lesser Antilles island arc and adjacent back arc Grenada basin
Abstrak
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.
Topik & Kata Kunci
Penulis (29)
Michael Manga
Matthew J. Hornbach
Anne Le Friant
Osamu Ishizuka
Nicole Stroncik
Tatsuya Adachi
Mohammed Aljahdali
Georges Boudon
Christoph Breitkreuz
Andrew Fraass
Akihiko Fujinawa
Robert Hatfield
Martin Jutzeler
Kyoko Kataoka
Sara Lafuerza
Fukashi Maeno
Michael Martinez‐Colon
Molly McCanta
Sally Morgan
Martin R. Palmer
Takeshi Saito
Angela Slagle
Adam J. Stinton
K. S. V. Subramanyam
Yoshihiko Tamura
Peter J. Talling
Benoit Villemant
Deborah Wall‐Palmer
Fei Wang
Akses Cepat
- Tahun Terbit
- 2012
- Sumber Database
- DOAJ
- DOI
- 10.1029/2012GC004260
- Akses
- Open Access ✓