Abstract
Summary The Muglad Basin is a northwest-southeast trending rift depository in Central Sudan, and forms an important part of the West and Central African Rift System (WCARS). The combination of both fluvial (reservoir) and lacustrine (seal / source) rocks in conjunction with the tectonic history of the basin-fill has created favorable juxtaposition of source, reservoir and seal lithologies. This intercontinental rift is linked to the South Atlantic rift-spreading centre in the west by the dextral west-southwest trending Central African Shear Zone (CASZ) and to the Indian Ocean in the east through the northwest trending Anza rift in Kenya. It is characterized by thick non-marine clastic sequences of Early Cretaceous to Tertiary age. Well penetration is limited to the 15 km of sedimentary section that is inferred from seismic data in the main trough. Three major rifting episodes are documented for the basin. The first rifting occurred in the Early Cretaceous, the second in Late Cretaceous and the third in the Tertiary. Structural framework of the basin is largely controlled by two sets of faults: an approximately north-south trending set of Cretaceous faults, and northwest-southeast trending Tertiary faults.
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