Physics – Geophysics
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3209301s&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 9, CiteID L09301
Physics
Geophysics
1
Marine Geology And Geophysics: Heat Flow (Benthic), Marine Geology And Geophysics: Marine Sediments: Processes And Transport, Tectonophysics: Heat Generation And Transport, Tectonophysics: Subduction Zone Processes (1031, 3060, 3613, 8413)
Scientific paper
Values of borehole temperature and %-smectite in illite/smectite mixed-layer clay provide important information about the basal heat flux history of the Nankai Trough subduction zone. Numerical simulations of sediment accumulation, heat conduction, and illite/smectite diagenesis permit comparisons of various thermal-history scenarios for ODP Site 1173. In our preferred models, basal heat flux during the first 10 Ma of sedimentation was near typical values for conductively cooling crust. During the last 5 Ma, basal heat flux was higher than expected. The anomalous heat flux was likely influenced by both off-axis volcanism and hydrothermal circulation.
Spinelli Glenn A.
Underwood M. B.
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