Definitions for "STRUCTURAL TRAP"
A fold or break (or both) in the earth's crust which creates an impervious trap for oil and gas. Oil will migrate underground through rock until it is "trapped".
A reservoir created by some cataclysmic geologic event that creates a barrier and prevents further migration. The most common structural traps are anticlines, in which at lease 80 percent of the world's oil and gas have been discovered.
A type of reservoir containing oil and/or gas formed by movements of the earths crust which seal off the oil and gas accumulation in the reservoir forming a trap.