petroleum exploration  search
RTbasin analysis
 bottom-simulating reflectors
 Exclusive Economic Zone
 exploration
 hydrocarbon indicators
 migration
 natural gas
 oil and gas fields
 petroleum
 source rocks
 stratigraphic traps
 stratigraphic wedges
 structural traps
 subsalt strata
SNA valid GeoRef index term through 1970. Reintroduced as a valid term in 1993. From 1971-1992, also search petroleum AND exploration. Includes natural gas. Added to Thesaurus in 1993.