Physics – Geophysics
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29a...7p&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 1, pp. 7-1, CiteID 1007, DOI 10.1029/2001GL013517
Physics
Geophysics
2
Marine Geology And Geophysics: Midocean Ridge Processes, Marine Geology And Geophysics: Gravity, Marine Geology And Geophysics: Plate Tectonics (8150, 8155, 8157, 8158), Tectonophysics: Plate Motions-Past (3040)
Scientific paper
Bathymetry and gravity profiles from the southwest Pacific have been used to locate and characterize the trace of a ridge-ridge-ridge triple junction created between ~84 and ~120 Ma. In areas free of subsequent volcanism, the triple junction trace is identified by a 1 km-deep bathymetric trough bordered by seafloor spreading fabric with distinctly different trends. Crustal thickness estimates obtained with gravity models indicate the triple junction trace is often characterized by anomalously thin crust, which may result from relatively low melt production at a triple junction. Crustal thickness estimates follow previously identified spreading rate-related trends.
Abrams Lewis J.
Larson Roger L.
Pockalny Robert A.
Viso Richard F.
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