Publications scientifiques
Joseph Bertrand Iboum Kissaaka
Marie Joseph Ntamak-Nida
François Mvondo Owono
P. G. Fowe Kuetche
Sylvie Bourquin
The present study is based on an approach including offshore seismic data and outcrops to better understand the tectonic evolution of the Kribi-Campo sub-basin. Tectonic markers recognized (normal and reverse faults, listric faults, fractures, drag folds, anticlines, grabens, slump and divergent structure) confirm the existence of syn-rift extensional and compressive phases. Two structural regions were recognized on the seismic lines: the western and eastern depocentres. Within both depocentres, the syn- rift succession is bounded above by the J erosive unconformity, which marks the end of the rifting in the Kribi-Campo sub-basin. In the Campo outcrops, the major active faults in the syn-rift deposit are those having a N000-020°E, N160-180°E, N80-110°E trend. Structures such as normal faults are connected to extensional syn-rift. Reverse faults and folds are indicative of a compressive episode, which is placed in the Lower Cretaceous (105-95 Ma). These faults and tectonic activity indicate that the Campo outcrops belong to the transitional or ending rifting phase.
