| rowspan = 4 | [[Stratigraphic trap]]s || rowspan = 4 | Erosional traps; Form as a result of erosional processes || rowspan = 2 | Truncation traps; Up-dip reservoir boundary created by truncation of a reservoir beneath an unconformity, followed by deposition of sealing unit on top of an unconformity. The unconformity surface provides top seal, but closure usually requires the presence of depositional or tectonic side and bottom seals beneath the unconformity. || Regional subcrop; Uniformly or gently dipping reservoir bed beneath an unconformity. Top seal is provided by postunconformity beds; bottom seal is provided by sealing units beneath reservoir. | | rowspan = 4 | [[Stratigraphic trap]]s || rowspan = 4 | Erosional traps; Form as a result of erosional processes || rowspan = 2 | Truncation traps; Up-dip reservoir boundary created by truncation of a reservoir beneath an unconformity, followed by deposition of sealing unit on top of an unconformity. The unconformity surface provides top seal, but closure usually requires the presence of depositional or tectonic side and bottom seals beneath the unconformity. || Regional subcrop; Uniformly or gently dipping reservoir bed beneath an unconformity. Top seal is provided by postunconformity beds; bottom seal is provided by sealing units beneath reservoir. |