The tectonic evolution of NW Borneo

TL;DRAbstract

This thesis deals with the structural evolution of the deepwater fold and thrust belt offshore Sabah, NW Borneo that represents a proven hydrocarbon play. Based on reprocessed and depth-migrated regional 2D seismic data, acquired in 1989 by the Federal Institute for Geosciences and Natural Resources (BGR), a detailed documentation of the styles of deepwater folds and their associated stratal pattern was carried out. Structural restoration enabled the quantification and evaluation of folding and thrusting mechanisms through the time. A variety of fold systems was documented including (1) anticlines with large interlimb angles that exhibit no seafloor expression; (2) anticlines with medium interlimb angles, seafloor relief and a faulted anticline crest; (3) anticlines with small to medium interlimb angles, with seafloor expression and flanks associated with slides and slumps, and finally; (4) anticlines with small interlimb angles that are commonly buried by a thick sedimentary overburde

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