Physics
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3507309e&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 7, CiteID L07309
Physics
2
Tectonophysics: Continental Margins: Transform, Tectonophysics: Plate Motions: Present And Recent (3040), Structural Geology: Kinematics Of Crustal And Mantle Deformation, Tectonophysics: Heat Generation And Transport, Seismology: Lithosphere (1236)
Scientific paper
The heat flow pattern along the transform margin of western North America reflects the nature of the tectonic evolution following the cessation of subduction. Whereas the high heat flow in the California Coast Ranges shows post-subduction heating, the low heat flow in the Great Valley and Sierra Nevada still reflects the Cenozoic subduction thermal regime. We analyzed a combined heat flow dataset from these regions and compared the thermal implications of the proposed two end member tectonic models, namely the slab window and the stalled slab models. The results show that persistence of low heat flow in a wide region agrees better with the stalled slab model. The Coast Range thermal anomaly could be due to combined effects of thermal relaxation of the stalled slab; viscous heating in the ductile zone; and/or an apparent high surface heat flow due to rapid erosion.
Blackwell David D.
Erkan Kamil
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