FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.

Joseph  Amobi  Francis; Timothy Peter Bata; Asabe Yahaya Kuku; Adams Ibrahim; Godspower Emmanuel Ubit; Gideon Gumut Sunday; Joshua Solomon Avong

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Original Research

JPAS. 2022; 22(2): 299-309

FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.

Joseph Amobi Francis, Timothy Peter Bata, Asabe Yahaya Kuku, Adams Ibrahim, Godspower Emmanuel Ubit, Gideon Gumut Sunday, Joshua Solomon Avong.

Abstract
Field and geochemical evidences presented in this study reports the occurrence of Cretaceous anoxic events in the Northern Benue Trough, Nigeria. Five Cretaceous formations (Bima, Yolde, Pindiga, Dukul and Fika Formations) within the Northern Benue Trough were investigated, and the field evidences reveal the occurrence of dark colored, finely laminated shale units lacking bioturbation which are mostly associated with coarsening upward sequences. This is typical of sediments deposited under transgressive waters with prevailing anoxic condition which was ubiquitous during the Cretaceous. Furthermore, TOC values obtained from the geochemical analyses of the dark shales were considerably high; ranging from 1.35% as the lowest value to 3.67% as the highest value, consistent with concentrations of organic matter preserved due to anoxic condition of deposition. While sulphur content of the studied samples were found to fall within ranges below 1% (the highest being just about 0.6%). Rock-eval pyrolysis data obtained for the studied samples suggests kerogen Type III and Type IV, implying organic materials derived from either continental or mixed continental and marine depositional environments. T-Max data obtained shows that most of the studied shales are thermally immature, implying a negligible to poor hydrocarbon generation potential.

Key words: Cretaceous anoxic events, Northern Benue Trough, Black shales, TOC, Organic sulphur, Hydrocarbon generation potential, geochemical evidences.

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How to Cite this Article

Pubmed Style

Francis JA, Bata TP, Kuku AY, Ibrahim A, Ubit GE, Sunday GG, Avong JS, . FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. JPAS. 2022; 22(2): 299-309.

Web Style

Francis JA, Bata TP, Kuku AY, Ibrahim A, Ubit GE, Sunday GG, Avong JS, . FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. https://www.atbuscienceforum.com/?mno=1564 [Access: May 25, 2023].

AMA (American Medical Association) Style

Francis JA, Bata TP, Kuku AY, Ibrahim A, Ubit GE, Sunday GG, Avong JS, . FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. JPAS. 2022; 22(2): 299-309.

Vancouver/ICMJE Style

Francis JA, Bata TP, Kuku AY, Ibrahim A, Ubit GE, Sunday GG, Avong JS, . FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. JPAS. (2022), [cited May 25, 2023]; 22(2): 299-309.

Harvard Style

Francis, J. A., Bata, T. P., Kuku, A. Y., Ibrahim, A., Ubit, G. E., Sunday, G. G., Avong, J. S. & (2022) FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. JPAS, 22 (2), 299-309.

Turabian Style

Francis, Joseph Amobi, Timothy Peter Bata, Asabe Yahaya Kuku, Adams Ibrahim, Godspower Emmanuel Ubit, Gideon Gumut Sunday, Joshua Solomon Avong, and . 2022. FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.. Science Forum (Journal of Pure and Applied Sciences), 22 (2), 299-309.

Chicago Style

Francis, Joseph Amobi, Timothy Peter Bata, Asabe Yahaya Kuku, Adams Ibrahim, Godspower Emmanuel Ubit, Gideon Gumut Sunday, Joshua Solomon Avong, and . "FIELD AND GEOCHEMICAL EVIDENCE OF CRETACEOUS ANOXIC EVENT IN PARTS OF THE NORTHERN BENUE TROUGH, NIGERIA.." Science Forum (Journal of Pure and Applied Sciences) 22 (2022), 299-309.

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