Bata, TimothyParnell, JohnSamaila, Nuhu K.Abubakar, M. B.Maigari, A. S.2016-11-022016-11-022015-11Bata, T, Parnell, J, Samaila, N K, Abubakar, M B & Maigari, A S 2015, 'Geochemical evidence for a Cretaceous oil sand (Bima oil sand) in the Chad Basin, Nigeria', Journal of African Earth Sciences, vol. 111, pp. 148–155. https://doi.org/10.1016/j.jafrearsci.2015.07.0261464-343Xhttp://hdl.handle.net/2164/7636Timothy Bata is thankful to the Petroleum Technology Development Fund of Nigeria (PTDF) (PTDF/E/OSS/PHD/BTP/359/11) for sponsoring his PhD research at the University of Aberdeen, and the management of Abubakar Tafawa Balewa University, Bauchi, Nigeria, for permitting him to proceed on study leave. We are grateful to Colin Taylor for his help during laboratory work and S. Bowden for advice on the interpretation of the gas chromatographic data.81138759engSDG 14 - Life Below WaterBima oil sandCretaceous oil sandsCretaceous marine transgressionChad BasinBima FormationBiodegradationQE GeologyQEJournal article10.1016/j.jafrearsci.2015.07.026111