Brunei, SW Ampa

Brunei, SW Ampa: seismic reflection terminations in growth fault rollover

SW Ampa field, Brunei. Data courtesy Shell. Large synsedimentary growth faults in outbuilding lower-coastal plain over a shelf edge. Two seismic events thinning and terminating towards the right, located just above and below the unfolded horizon are indicated with red arrows.

Notes: ways of handling growth faults are illustrated below. Growth fault thickness is affected by the choice of moving the foot-wall side (1), the hanging-wall side (3) or both sides (2). It is sometimes useful in growth fault situations to unfault and unfold only a single horizon retaining all thickness variation (4).