Foraminiferal Stratigraphy and Paleoecological Interpretation of Sediments Penetrated by Kolmani River -1 Well, Gongola Basin, Nigeria

C. N. NWOJIJI^1, , P. OSTERLOFF², A. U. OKORO³ and G. NDULUE²

¹Department of Geology and Exploration Geophysics, Ebonyi State University, P.M.B. 053, Abakaliki, Nigeria

²Geological Services Team, Shell Petroleum Development Company (SPDC) Warri, Nigeria

³Department of Geological Sciences, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria

Cite this paper

C. N. NWOJIJI, P. OSTERLOFF, A. U. OKORO and G. NDULUE. Foraminiferal Stratigraphy and Paleoecological Interpretation of Sediments Penetrated by Kolmani River -1 Well, Gongola Basin, Nigeria. Journal of Geosciences and Geomatics. 2014; 2(3):85-93. doi: 10.12691/JGG-2-3-3

Abstract

Foraminiferal investigation of the Kolmani River -1 well yielded a total of forty two (42) species. The foraminiferal assemblages comprise 86% arenaceous benthonics, 4% calcareous benthonics and 8% planktonic foraminifera. Few ostracod and gastropods shells were recovered and they make up the remaining 2% of the assemblages. Quantitative and qualitative analyses of the recovered foraminifers were used to interpret the age, paleoecology, paleobathymetry and paleoenvironment of the sediments penetrated by the well. Three foramineferal assemblage zones consisting of Agathamina sp.2, Haplophragmoides bauchensis and Heterohelix moremani-Haplophragmoides talokensis Assemblage Zones were identified in the drilled interval of Kolmani River -1 Well. These zones are dated Campanian-early Santonian, early Coniacian-early Turonian and early Turonian-late Cenomanian respectively. The paleobathymetry ranges from Inner to Outer neritic suggesting water depths of less than 200 m. The overall depositional environments varies between coastal plain/estuarine to open marine setting. The dominance of agglutinated foraminiferal species such as Ammobaculites sp, Haplophragmoides sp, Miliammina sp and Trochamina sp suggest restricted, low oxygen bottom water conditions for most of the paleoenvironments.

Keywords

foraminifera, arenaceous, benthonic, planktonic, palaeobathymetry, neritic, estuarine, open marine

Copyright

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References

[1]	Abubakar, M.B., Luterbacher, H.P., Ashraf A.R. and Ziedner M. A.S. (2011). Late Cretaceous palynostratigraphy in the Gongola Basin (Upper Benue Trough, Nigeria). Journal of African Earth Sciences. 60, 19-27.
[2]	Abubakar, M.B. and Obaje, N.G. (2001). Preliminary Biostratigraphic evaluation of the Hydrocarbon Potentials of the Cenomanian-Turonian Horizon in the Gongila Formation, Upper Benue Trough. Nigeria. Journal of Mining and Geology. 37 (2), 121-128.
[3]	Abubakar, M.B., Obaje, N.G., Luterbacher, H.P., Dike, E.F.C. and Ashraf, A.R. (2006). A
[4]	Report on the occurrence of Albian- Cenomanian elater-bearing pollen in Nasara-1 well, Upper Benue Trough, Nigeria: Biostratigraphic and palaeoclimatological implications. Journal of African Earth Sciences. 45, 347-354.
[5]	Akande, S.O., Ojo, O.J. and Ladipo, K. (2005). Upper Cretaceous sequences in the Southern Bida Basin, Nigeria. A Field guidebook. Mosuro publishers, Ibadan. 60 p.
[6]	Benkhelil, J. (1989). The origin and evolution of the Cretaceous Benue Trough (Nigeria. Journal of African Earth Sciences. 8, 251-282.
[7]	Bernhard, J. M. (1986). Characteristic assemblages and Morphologies of benthic foraminifera from anoxic, organic-rich deposits: Jurassic through Holocene: Journal of Foraminiferal Research, 16 (3), 207-215.
[8]	Carter, J.O., Barber, W., Tart, E.A. and Jones G.P. 1963. The geology of parts of Adamawa, Bauchi and Bornu provinces in Northeastern Nigeria. Geol. Surv. Nig. Bull., 30: 35-53.
[9]	Dike, E.F.C. (1993). Stratigraphy and structure of the Kerri-Kerri Basin, northeastern Nigeria. J. Min. Geol. 29 (2), 77-93.
[10]	Ehinola o. A. (2010). Biostratigraphy and depositional environment of the oil shale deposit in the Abakaliki fold belt, Southeastern Nigeria. Oil shale. 27 (2), 99-125.
[11]	Gibson, T.G., and Buzas, M.A. (1973). Species diversity patterns in modern and Miocene foraminifera of the eastern margin of North America: Geological Society of America, Bulletin, 84, 217-238.
[12]	Guiraud, M. (1990). Tectono-sedimentary framework of the Early Cretaceous continental Bima Formation (Upper Benue Trough, NE Nigeria). Journal of African Earth Sciences 10, 341-353.
[13]	Guiraud, R. and Maurin, J.C (1992). Early Cretaceous rifts of western and central Africa: An overview. Tectonophysics. 213, 153-168.
[14]	Holger G. (1998). Benthic foraminifera from the Maastrichtian Lower Mamu formation Near Leru(Southern Nigeria): Paleoecology and Paleogeographic significance. Journal of Foraminiferal Research. 28 (1), 76-89.
[15]	Holger G. (2004). Planktonic foraminifera of the Nkalagu Formation type locality (Southern Nigeria, Cenomanian - Coniacian): Biostratigraphy and palaeoenvironmental interpretation. Cretaceous Research. 25, 191-209.
[16]	Muller, J.W. (1968). Palynology of the Pedawan and Plateau Sandstone Formations (Cretaceous-Eocene) in Sarawak, Malaysia. Micropal. 14, 1-37.
[17]	Murray, J.W. (1968). Living foraminifers from lagoons and estuaries: Micropaleontology. 14 (4), 435-455.
[18]	Murray, J.W. 1974. Distribution and Ecology of Living Benthic Foraminiferids, Heinemann Educational Books, London, 274 p.
[19]	Obaje, N.G., Ulu, O.K., Maigari, S.A and Abubakar, M.B. (2000). Sequence Stratigraphic and Paleovenvironmental Interpretations of Heterohelicids from the Pindiga Formation Northeastern Benue Trough, Nigeria. Journal of Mining and Geology, 36 (2) 191-152.
[20]	Obaje, N.G. (1994). Coal petrography, microfossils and palaeoenvironments of Cretaceous Coal Measures in the Middle Benue Trough of Nigeria. Tubinger Mikropalaeotologische Mittellungen, 11, 74-89.
[21]	Obaje, N.G., Ulu, O.K. and Petters, S.W. (1999). Biostratigraphy and Geochemical controls of Hydrocarbon Prospects in the Benue Trough and Anambra Basin, Nigeria, NAPE Bulletin, 14 (1) 15-18.
[22]	Ojo, O. J. and Akande, S.O. (2008). Microfloral assemblage, age and paleoenvironment of the Upper Cretaceous Patti Formation, southeastern Bida Basin, Nigeria: Journal of Mining and Geology. 44, 71-78.
[23]	Overell, J.S.W. (1995).Cretaceous Play Review. Exploration Report. 91 p
[24]	Petters, S.W. (1980). Biostratigraphy of the Upper Cretaceous foraminifera of the Benue Trough, Nigeria. Journal of Foraminiferal Research. 10, 191-204.
[25]	Petters, S.W. (1982). Central West African Cretaceous-Tertiary Benthic Foraminifera and Stratigraphy. Palaeogeographica. 179 1-104.
[26]	Petters, S.W. 1983. Lithoral and Anoxic Facies in the Benue Trough. Bulletin des Centres de Recherches Exploration. Production ELF-Aquintaine 7, 361-365.
[27]	Pierce, R. L. (1961). Lower -Upper Cretaceous plant microfossils from Minnesota. Minn. Geol. Surv. Bull. 42. 1-86.
[28]	Sani, A. (1999). Palaeonvironment and Paleosalinity of deposition of the Gongola Formation of Upper Benue Trough, Nigeria. B. Tech. Research Project, A.T.B.U, Bauchi.
[29]	Schlangers, O. and Jenkins, C. (1976). Cretaceous Anoxic Events: Causes and consequences: Geologie en mijnbouw. v. 55, 179-184.
[30]	Wilscht J.G. (1968). Paleocene - Lower Cretaceous Epoch palynological Zone Markers. EP Report 30309. 43 p.
[31]	Zarboski, P. Ugodunlunwa, F. Idornigie, A., Nnabo, P.N. and Ibe, K. (1997). Stratigraphy and structure of the Cretaceous Gongola basin, Northeastern Nigeria. Bulletin des Centres de Recherches Exploration-Production. ElF-Aquitaine 21, 153-185.
[32]	Zaborski, P.M. (2003). Guide to the Cretaceous system in the upper part of the Upper Benue Trough, north-eastern Nigeria. African. Geoscience. Review 10 (1 and 2), 13-32.