Deep-water structures in southern Gabon are among the best imaged in the world. Our 30-km-long study area in the Anton Marin–Astrid Marin blocks runs obliquely through the northern part of the Congo Fan. The study area is entirely covered by high-quality 3D seismic data. It spans the complex transition between the landward extensional domain and the basinward contractional domain. Both domains detach on Aptian salt. We use seismic sections and dip-corrected isochron maps to illustrate and analyze the following processes.

Control of thrust location by precursor anticlines and diapirs: a regular wavelength of the early Albian gentle precursor anticlines...