passive  search
passive margins  search
UFAtlantic-type margins
RTrift zones
 plate boundaries
 plate tectonics
 rifting
 accreting plate boundary
 plate divergence
 continental margin
 aseismic margins
SNAdded to Thesaurus in 1981.
passive methods  search
RTgeophysical methods
 geophysical surveys
 methods
 remote sensing
 seismic methods
SNAdded to Thesaurus in 1985.