New geochemical data from the Nigerian sector of the Chad basin: implications on hydrocarbon prospectivity

Source Rock Evaluation in The Lake Chad Area of the Bornu Basin, Nigeria

“…The oldest named unit, the Bima Formation, consists of sparsely fossiliferous, poorly sorted, cross-stratified, fine-to coarsegrained arkosic sandstones interlayered with clay/shale, which are interpreted as fluvial and lacustrine deposits [17,21]. These continental merge the two formations (Yobe and Gongila) together as the Gongila Formation ( Figure 2) Marine transgression predominated throughout most of the Turonian and reached its peak in the late Turonian to Senonian, when sediments of Fika Formation were deposited in an open marine environment [3,4,23]. This formation conformably rests on the Gongila Formation and consists of blue to black, thick-bedded shales, which sometimes contain gypsum, and thin interbedded siltstones and sandstones.…”

“…Gombe Formation consists of alternating siltstones, clays, and sandstones that become ferruginous towards the top. This formation is interpreted to have been deposited in an estuarine to deltaic environment during the Maastrichtian [4,17]. The last rifting phase in the Chad Basin during the late Maastrichtian to Paleocene resulted in development of a series of NE-SW horst and graben structures.…”

“…The last rifting phase in the Chad Basin during the late Maastrichtian to Paleocene resulted in development of a series of NE-SW horst and graben structures. This phase was followed by a long period of non-deposition [4,20]. The long unconformity period elapsed with the deposition of Kerri-Kerri Formation, probably in a continental (lacustrine) environment during the Neogene.…”

“…Evaluation of potential source rock is an important parameter to be considered in reviewing and isolating the most auspicious area for further work. Previous workers, notably, Olugbemiro, Obaje, Moumouni and Alalade and Tyson [2][3][4][5] have evaluated potential source rocks in some parts of the basin, although the selection of materials for the analysis appears haphazard. These works have been reviewed in Adekoya [6] suggesting that the basin contain sufficient hydrocarbon generation elements.…”

Angular Spectral Analysis and Lowpass Filtering of Aeromagnetic Data Over Western Parts of Bornu Basin of Nigeria

“…The basin borders the basement complex of northern Nigeria to the west and southwest and the Benue Trough to the south (Figure 1). The Bornu basin together with the Benue Trough, the Bida basin, the Sokoto basin and the Anambra basin constitute another set of a series of Cretaceous and younger rift basins in Central and West Africa whose origin is related to the opening of the South Atlantic (Obaje et al, 2004).…”