부산대학교 도서관

Although several works utilizing subsurface seismic data acquired within the inland Anambra Basin and the neighbouring onshore and offshore section of the Niger Delta Basin have revealed the presence of structural and some stratigraphic hydrocarbon entrapment mechanisms, none have been able to document the existence of these traps on outcrops. This is probably due to poor exposures and lack of access to vicinities where these structural and stratigraphic features are visible on outcrops. This work captures a selection of outcrops in the Anambra inland basin across southeastern Nigeria that are associated with possible hydrocarbon traps. Key structural traps observed include; hanging wall closures, footwall closures, horst and collapsed-crest structure. The stratigraphic traps comprise channel fills and pinch-out structures. In addition, some strati-structural/combination traps were seen in some outcrop sections with faulted sand lenses. These traps are essential elements of the petroleum systems, which could accommodate hydrocarbons within the Anambra Basin, and associated inland basins of Nigeria. Hence, could act as a guide during hydrocarbon prospectivity studies. [ABSTRACT FROM AUTHOR]