Changes

  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

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Secondary or even tertiary trapping elements commonly modify the primary trapping agent. Structural traps may have a stratigraphic component or vice versa. Sometimes the distinction whether the trap belongs to one system or another is quite blurred. Traps with two or more trapping elements are called combination traps.

Secondary or even tertiary trapping elements commonly modify the primary trapping agent. [[Structural trap system|Structural traps]] may have a [[Stratigraphic trap|stratigraphic]] component or vice versa. Sometimes the distinction whether the trap belongs to one system or another is quite blurred. Traps with two or more trapping elements are called combination traps.

==Primary trapping element==

==Primary trapping element==