Changes

[[file:exploring-for-stratigraphic-traps_fig21-5.png|left|thumb|{{figure number|1}}From unpublished data by R.C. Tobin, 1987.]]

[[file:exploring-for-stratigraphic-traps_fig21-5.png|left|thumb|{{figure number|1}}From unpublished data by R.C. Tobin, 1987.]]

Stratigraphic trap geometries can be mapped and defined at any geologic scale from an interpretation of fades in seismic or well data, but diagenetic overprints often modify primary trapping geometries. Diagenetic changes often can be predicted and mapped reliably, especially if they follow fades or paleostructure. However, if diagenesis does not follow fades or paleostructure, then the exploration and exploitation risk increases because predicting the trap location is more difficult.

Stratigraphic trap geometries can be mapped and defined at any geologic scale from an interpretation of facies in seismic or well data, but diagenetic overprints often modify primary trapping geometries. Diagenetic changes often can be predicted and mapped reliably, especially if they follow facies or paleostructure. However, if diagenesis does not follow facies or paleostructure, then the exploration and exploitation risk increases because predicting the trap location is more difficult.

==Example==

==Example==