Earth, Energy & Environment
Received: 01 Jun 2018 , Published: 03 June 2018
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|1||Uzoegbu, M.U., Amoke, A.I., Ikwuagwu, C.S. and Agbo, C.C.|
The studied area lies between Latitude 5o30´ to 8o00´N and Longitude 6o00´ to 8o30´E. The sedimentary succession in the Anambra basin, southeast Nigeria is a potential active petroleum system with the generation, migration and accumulation of hydrocarbons in commercial quantities. The Cretaceous sediments in the Anambra Basin (SE Nigeria) consist of a cyclic succession of coals, carbonaceous shales, silty shales and siltstones interpreted as deltaic deposits. This research aims in determining the origin and depositional environment of organic matter from coals of the Mamu Formation in the Anambra Basin. Biomarkers in the aliphatic and polar fractions and aromatic hydrocarbon distributions in the samples were studied using Gas Chromatography- Mass Spectrometry (GC-MS). The Carbon isotope analysis of individual n-alkanes in the aliphatic fraction was performed using Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometer (GC-IRMS). The vitrinite reflectance measurements of the samples were taken using Zeiss standard universal reflected microscope. The δ13C isotopic values for n-alkanes range from –31.7 to –29.2 δ13‰PDB and –30.1 to –28.2 δ13‰PDB in Enugu and Okaba samples respectively. High (Pr/Ph) ratio (1.73-12.47) and isotopic distribution of individual alkanes showed that Mamu coal samples consisted of terrestrial organic matter with marine incursion deposited under oxic/suboxic-oxic in lacustrine-fluvial/deltaic environment.
Adedosu, T. A. (2009). Aspects of Organic Geochemistry of Nigerian Coal as a Potential Source-Rock of Petroleum. Ph.d Thesis, University of Ibadan, pp. 168-174.
Adeleye, D.R. and Fayose, E.A. (1978), Stratigraphy of the type section of Awe Formation, Odukpani area, southeastern Nigeria. Nig. Jour. Min. Geol., 15, 33-37.
Akande, S. O. and Erdtmann, B. D. (1998), Burial metamorphism (thermal maturation) in Cretaceous sediments of the southern Benue trough and Anambra Basin, Nigeria. Amer. Assoc. Petrol. Geol. Bull., 82 (6), 1191-1206.
Akande, S. O., Erdtmann, B. D. and Hetenyi, M. (1998), Paleoenvironments, source rock potential and thermal maturity of the Upper Benue rift basins, Nigeria: Implications for hydrocarbon exploration. Org. Geochem., 29, 531-542.
Arens, N.C., Jahren, A.H. and Amundson, R. 2000.Can C3 plants faithfully record the carbon isotopic composition of atmospheric carbon dioxide? Paleobiology 261:137-164.
Audino, M., Grice, K., Alexander, R. and Kagi, R.I. 2002.Macrocyclic alkanes in crude oils from the algaenan of Botryococcus braunii. Organic Geochemistry 33:979-984.
Benkhelil, J. (1989), The evolution of the Cretaceous Benue Trough, Nigeria. Jour. Afri. Earth Sci., 8, 251-282.
Bi, X., Sheng, G., Liu, X., Li, C. and Fu, J. 2005.Molecular and carbon and hydrogen isotopic composition of n-alkanes in plant leaf waxes. Organic Geochemistry 36:1405-1417.
Boreham, C.J., Summons, R.E., Roksanolic, Z. and Dowling, L.M. 1994.Chemical, molecular and isotopic differentiation of organic facies in the Tertiary lacustrine Duaringa oil shale deposit, Queensland, Australia.Organic Geochemistry 21:655-712.
Bustin, R.M. (1988), Sedimentology and characteristics of dispersed organic matter in Tertiary Niger Delta: Orgin of source rocks in a deltaic system. Amer. Assoc. Petrol. Geol. Bull., 71, 277-298.
Canuel, E.A., Freeman, K. and Wakeham, S., 1997. Isotopic compositions of lipid biomarker compounds in estuarine plants and surface sediments. Limnological Oceanography 42.7:1570–1583.
Carter, J.D., Barber, W. and Jones, G.P. 1963.The Geology of Parts of Adamawa, Bauchi and Bornu provinces in Northeastern Nigeria.Bulletin of the Geological Survey of Nigeria 30:109.
Chabbi, A., Rumpel, C. and Kögel-Knabner, I. 2007.Stable carbon isotope signature and chemical composition of organic matter in lignite-containing mine soils and sediments are closely linked. Organic Geochemistry 38.6:835-844.
Chung, H.M., Rooney, M.A., Toon, M.B. and Claypool, C.E. (1992), Carbon isotope composition of marine crude oils. Amer. Assoc. Petrol. Geol. Bull., 85(7), 1000-1007.
Collister, J.W., Lichtfouse, E., Hiesshima, G. and Hayes, J.M. 1994.Partial resolution of sources of n-alkanes in the saline portion of the Parachute Creek Member, Green River Formation (Piceance Creek Basin, Colorado). Organic Geochemistry 21:645-659.
Didyk, B.M., Simoneit, B.R.T., Brassel, S.C. and Eglinton, G. 1978.Organic geochemical indicators of paleoenvironmental conditions of sedimentation. Nature 272:216-222.
Dike, E.F.C. (1976a), Hydrocarbon prospects of Nigerian Basins, Vol. 1: Niger Delta Basin, 142pp. Consultancy Report for The Superior Oil Company, Houston Texas, U.S.A.
Dike, E.F.C. (1976b), Hydrocarbon prospects of Nigerian Basins, Vol. 2: Interior Basins- Anambra, Benue, Gongola and Bornu (Chad) Basins, 143-233. Consultancy Report for The Superior Oil Company, Houston Texas, U.S.A.
Dike, E.F.C. (1993), Stratigraphy and structure of the Kerri-Kerri Basin, north-eastern Nigeria. Jour. Min. Geol., 29 (2), 77-93.
Dike, E.F.C. (2002), Sedimentation and tectonic evolution of the Upper Benue Trough and Bornu Basin, NE Nigeria. Nig. Min. Geosci. Soc. Annual Intern. Conf., Port Harcourt, Nigeria, 2002 (NMGS/ELF Award Winning Paper), Abs. Vol.
Dike, E.F.C. and Onumara, I.S. (1999), Facies and facies architecture and depositional environments of the Gombe Formation, Gombe and Environs, NE Nigeria. Sci. Assoc. Nigeria Annual Conf., Bauchi, Nigeria, 1999. Abs. Vol.
Enu, I. E. (1987), The palaeoenvironment of deposition of Late Maastrichtian to Paleocene black shale in the eastern Dahomey Basin, Nigeria. Geol. Mijinbouw, 66, 15-20
Evamy, B.D., Hareboure, J., Knaap, P.W.A., Molly, F.A. and Rowlands, R.M. (1978), Hydrocarbon habitat of Tertiary Nger delta. Amer. Assoc. Petrol. Geol., Bull., 61, 1-39.
Freeth, S.J. (1990), The origin of the Benue Trough. In: The Benue Trough Structure and Evolution (Edited by Ofoegbu, C.O). Vieweg and Sohn, Braunchweig, Germany. 217-227.
Haberer, R.M., Mangelsdorf, K., Wilkes, M. and Horsefield, B. 2006.Occurrence and paleoenvironmental significance of aromatic hydrocarbon biomarkers in Oligocene sediments from the Mallik 5L-38 Gas Hydrate Production Research Well (Canada). Organic Geochemistry 37:519-538.
Hayes, T.M., Freeman, K.H., Popp, B. and Hoham, C.H. 1990.Compound specific isotope analyses: a novel tool for reconstruction of biogeochemical proceses. Organic Geochemistry 16:1115-1128.
Hayes, J.M. 1993.Factors controlling 13C contents of sedimentary organic compounds: Principles and evidence. Marine Geology 113:111-125.
Hoefs, J. (1997), Stable Isotope Geochemistry, Springer, Berlin. 12pp.
Hu, J., Peng, P., Jia, G., Fang, D., Zhang, G., Fu, J. and Wang, P. 2002. Biological markers and their carbon isotopes as an approach to the paleoenvironmental reconstruction of Nansha area, South China Sea, during the last 30 ka. Organic Geochemistry 33: 1197–1204.
Hunt, J.M., Philp, R.P. and Kvenvolden, K.A. 2002.Early developments in petroleum geochemistry. Organic Geochemistry 33:1025-1052.
Jones, H. A. (1965), Ferruginous oolites and pisolites. Jour. Sed. Petrol., 35,838-845.
Kvenvolden, K.A. and Squires, R.M. 1967. Carbon isotopic composition of crude oils from Ellenburger group (Lower Ordovician), Permian Basin west Texas and eastern New Mexico.American Association of Petroleum Geologists Bulletin 5:1293-1303.
Kennicult, M.C. and Brooks, J.M. 1990.Unusual normal alkane distributions in offshore New Zealand sediments. Organic Geochemistry 15:193-197.
Lücke, A., Helle, G., Schleser, G.H., Figueral, I., Mosbrugger, V., Jones, T.P. and Rowe, N.P. 1999.Environmental history of the German Lower Rhine Embayment during the Middle Miocene as reflected by carbon isotopes in brown coals. Paleogeography, Paleoclimatology, Paleoecology 154:339-352.
Meyers, P.A. 2003. Application of Organic Geochemistry to paleolimnological reconstructions: a summary of examples from Laurentian Great Lakes.Organic Geochemistry 34.2:261-289.
Murat, R.C., (1972), Stratigraphy and paleogeography of the Cretaceous and lower Tertiary in southern Nigeria. In: African Geology (Ed. by Dessauvagie, T.F.J. and Whiteman, A.J.), 251-266. Ibadan University press, Ibadan, Nigeria.
Murray, A.P., Summons, R.E., Boreham, C.J. and Dowling, L.M. 1994.Biomarker and normal alkane isotope profiles of Tertiary oils: Relationship to source rock depositional setting. Organic Geochemistry 22:521-542.
Obaje N. G. and Hamza, H. (2000), Liquid hydrocarbon source rock. Potential of mid-Cretaceous coals and coal measures in the Middle Benue Trough of Nigeria. Intern. Jour. Earth Sci., 89, 130-139.
Obaje, N.G., Ulu, O.K. and Petters, S.W. (1999), Biostratigraphic and geochemical controls of hydrocarbon prospects in the Benue Trough and Anambra Basin, Nigeria. Nig. Assoc. Petrol. Expl. Bull., 14(1), 18-54.
Obaje, N. G., Wehner, H., Scheeder, G., Abubakar, M.B and Jauro, A. (2004), Hydrocarbon prospectivity of Nigeria’s inland basins: From the viewpoint of organic geochemistry and organic petrology. Amer. Assoc. Petrol. Geol. Bull., 88(3), 325-353.
Obaje, N. G., Attah, D. O., Opeloye, S. A. and Moumouni, A. (2006), Geochemical evaluation of the hydrocarbon prospects of sedimentary basins in Northern Nigeria. Geochem. Jour., 40, 227 – 243.
Offodile, M. E. (1976), The geology of the Middle Benue, Nigeria. Spec. Vol. Palaeont. Inst. Uni. Uppsala, 4, 1-166.
Ojoh, K. A. (1990), Cretaceous geodynamic evolution of the southern part of the Benue Trough (Nigeria) in the equatorial domain of the South Atlantic: Stratigraphy, basin analysis and paleo-oceanography. Bull. Cent. Rech. Expl. Prod., Elf-Aquitaine, 14, 419-442.
Osazuwa, I. B., Ajakaiye, D. E. and Verheijen, P. J. T. (1981), Analysis of the structure of part of the Upper Benue rift valley on the basis of new geophysical data. Earth Evol. Sci., 2, 126-135.
Pearsen, M. J. and Obaje, N. G. (2000), Onocerane and other triperpenoids in Late Cretaceous sediments from the Upper Benue Trough of Nigeria: tectonic and palaeoenvironmental. Amer. Assoc. Petrol. Geol. Bull., 83, 1943-1964.
Petters, S. W. (1978), Stratigraphic evolution of the Benue Trough and its implications for the Upper Cretaceous paleography of West Africa. Jour. Geol., 86, 311-322.
Petters, S. W. (1979), Maastrichtian arenaceous foraminifera from northwestern Nigeria. Paleontology, 22, 947-963.
Petters, S. W. (1980), Biostratigraphy of upper Cretaceous foraminifera of the Benue Trough, Nigeria. Jour. Fora. Res., 10, 199-204.
Petters, S. W. (1982), Central West Africa Cretaceous-Tertiary benthic foraminfera and stratigraphy. Paleont. (A) 179, 1-104.
Petters, S. W. (1991), Regional Geology of Africa. Springer- Verlage, Berlin, 722pp.
Petters, S.W. and Ekweozor, C. M. (1982), Petroleum geology of the Benue Trough and southeastern Chad Basin, Nigeria: Amer. Assoc. Petrol. Geol. Bull., 60(8), 1141-1149.
Powell, T.G. (1982), Petroleum geochemistry of the Verill Canyon Formation: a source for Scotian Shelf hydrocarbon. Bull. Can. Petrol. Geol., 30, 167-179.
Powell, T.G. and McKirdy, D.M. 1993.Relationship between ratio of pristane to phytane, crude oil composition and geological environment in Australia.Nature 243:37-39.
Revill, A.T., Volkman, J.K., O’Leary, T., Summons, R.E., Boreham, C.J., Banks, M.R. and Denver, K. 1994.Hydrocarbon biomarkers, thermal maturity, and depositional setting of Tasmania, Australia.Geochimica et Cosmochimica Acta 58:3803-3822.
Reyment, R.A. (1965), Aspects of the geology of Nigeria. Ibadan. Univ. Press, Ibadan, Nigeria, 145pp.
Schouten, S., Rijpstra, W.I.C., Kok, M., Hopmans, E.C., Summons, R.E., Volkman, J.K. and Sinninghe Damste, J.S. 2001.Molecular Organc tracers of biogeochemical processes in a saline meromictic lake (Ace Lake). Geochimica et Cosmochimica Acta 65,p.1629-1640.
Schwab, V.F. and Spangenberg, J.E. 2007. Molecular and isotopic characterization of biomarkers in the Frick Swiss Jura sediments: A palaeoenvironmental reconstruction on the northern Tethys margin. Organic Geochemistry 38:419-439.
Silverman, S.R. and Epstein, S. 1958.Carbon isotopic composition of petroleum and other sedimentary organic materials. American Association of Petroleum Geologists Bulletin 42:998-1012.
Simpson, A. (1954), The Nigeria coalfield. The geology of parts of Onitsha, Owerri and Benue provinces. Bull. Geol. Sur. Nigeria, 24, 1-85.
Stahl, W.J. 1977.Carbon and Nitrogen isotopes in hydrocarbn research and exploration. Chemical Geology 20:121-149.
Sun, Y., Sheng, G., Peng, P. and Fu, J. 2000. Compound-specific stable carbon isotope analysis as a tool for correlating coal-sourced oils and interbedded shale-sourced oils in coal measures: an example from Turpan basin, northwestern China. Organic Geochemistry 31:1349-1362.
Tanner, B.R., Uhle, M.E., Kelley, J.T. and Mora, C.I. 2007. C3/C4 variations in salt marsh sediments: An application of compound specific isotopic analysis of lipid biomarkers to late Holocene paleoenvironmental research. Organic Geochemistry 38: 474-484.
Thompson, K.F.M., Kennicutt II, M.C. and Brooks, J.M. (1990), Classification of offshore Gulf of Mexico oil and Gas condensates. Amer. Assoc. Petrol. Geol. Bull., 74, 187-198.
Tuo, J. Ma, W., Zhang, M. and Wang, X. 2007.Organic geochemistry of the Dongsheng sedimentary uranium ore deposits, China.Applied Geochemstry 22:1949-1969.
Welte, D.H., Hageman, H.W., Hollerbach, A., Leythauser, D. and Stahl, W. 1975.Correlation between petroleum and source rock. Proceedings 9th World Petroleum Congress.London: Applied Science Publishers II.179-191.
Whiteman, A. J. (1982), Nigeria: its Petroleum Geology, Resources and Potential. 1, 176pp; 2, 238pp. Graham and Trotman, London, UK.
Wright, J. B. (1981), Review of the origin and evolution of the Benue Trough in Nigeria. Earth Evol. Sci., 2, 98-103.
Wilkes, H., Ramrath, A. and Negendank, J. F. W. 1999. Organic geochemical evidence for environmental changes since 34,000 yrs BP from Lago di Mezzano, central Italy. Journal of Paleolimnology 22:349–365.
Yangming, Z., Huanxin, W., Aiguo, S., Digang, L. and Dehua, P. 2005.Geochemical characteristics of Tertiary saline lacustrine oils in the Western Qaidam Basin, northwest China.Applied Geochemistry 33:1225-1240.
Zaborski, P. M. (1998), A review of the Cretaceous system in Nigeria. Afri. Geol. Rev., 5(4), 385-483.