Though quite a number of studies 7, 8, 2225 have been done on age and paleoenvironment of imo shale formation, however limited studies, 14, 26 were. The study area is located in the southern part of the anambra basin and covers about 2200 km 2. Click, drag, and drop to reorder files or press delete to remove any content you dont want. Biostratigraphy and paleoenvironment of the coniacian. The anambra river flows 210 kilometres mi into the niger river and is found in anambra, nigeria. This page bundles the available data for the anambra basin in the africa. Controversy surrounding the stratigraphy of the anambra basin, depositional. Click add files and select the files you want to include in your pdf. Hence, reconstruction of the maximum burial depth and paleotemperature of viable source beds is recommended as necessary input into a successful exploration strategy for the basin.
Anambra basin is one of the energyrich inland sedimentary basins in nigeria. It is overlainby the ezeakuformation, which constitutes the turonian deposits. Basinwide stratigraphic correlation across the anambra basin using base of the. Play fairway evaluation of the anambra basin, southeast nigeria. The analysis and interpretation of the data sets allow the reconstruction of sedimentary facies parameters, diagenetic histories, dominant controls on sequence development, and allow an added interpretation of the sediments of the northern niger delta and anambra basin reservoir qualities. Kinematics of faults and joints at enugu area of the. Pdf petroleum potentials of the nigerian benue trough. The anambra basin is a cretaceous basin having almost a roughly triangular shape figure 1 with a total. The basin data is derived from a lower resolution grid which has been upsampled using gmt. Aspects of the biology of clarias gariepinus in anambra river. The shaly facies grade laterally to sandstones of the owelli and. Statistical study in the iullemeden aquifer system 89 5. All uploads and downloads are deemed secure and files are permanently deleted from the smallpdf servers within an hour. Do you have multiple pdf files that need to be combined into one big document.
Department of geology, university of nigeria, nsukka, nigeria 2department of physics, university of port harcourt, port harcourt, nigeria abstract data from sixteen deep wells drilled for oil exploration purposes in the anambra basin of southeastern nigeria indicate large variations in temperature gradients and heat flow within the basin. Anambra basin is one of the basins in nigeria, habouring the largest deposit of subbituminous coal and lignite. This paper presents the results of the structural interpretation over part of anambra basin carried out using aeromagnetic and landsatetm data. What links here related changes upload file special pages permanent link page information wikidata. The images are hyperlinks and will open up a separate window with a high resolution pdf. Among the earlier works on the study of the stratigraphy of anambra basin include reyment, 1965. Sedimentological characteristics of ajali sandstone at okigwe. You can merge pdfs or a mix of pdf documents and other files. The images are hyperlinks and will open up a separate window with a high resolution pdf image of the map. Structural interpretation of part of anambra basin nigeria.
Geochemical data of the iullemeden aquifer system 79 4. Stakeholders on water have asked the anambra imo river basin development authority to embark on the recycling or reuse of waste water to ensure rapid economic development of its catchment areas. Department of zoology, university of nigeria, nsukka, enugu state, nigeria. Hydrocarbon generation indications from source rock to reservoir rock. These successions were invaded by intrusives, volcanic rocks, and veintype leadzinc minerals, especially in the albiancenomanian section of the abakaliki anticline. The main oil source formations of the anambra basin. Olatunji palystrat limited, ibadan nigeria madukwe, henry y department of geology, ekiti. The anambra basin is a relatively underdeveloped region rich in gas resources, which we look to harness to provide gas for local industry in the medium to longterm. The anambra basin is located in the southeastern part of nigeria. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. The nkporo shale documents the transgressive event that. Assessment of aeroradiometric data of southern anambra basin 745 kuforijimi, olorunsola.
Geological and mineral map of the study area adapted from geological and mineral map of nigeria, 2009, nigerian geological survey agency. Assessment of undiscovered petroleum in the tertiary niger delta. Since then we have increased our interest in the area, acquiring a 22. The main oil source formations of the anambra basin, southeastern nigeria. Diagenetic study of sandstone sediments in parts of anambra and afikpo basins, southeastern nigeria onyekuru, s.
Aspects of hydrocarbon potential of the tertiary imo shale. Onitsha was selected for this study being strategically located and drained by several rivers including the river niger. Depositional environments, organic richness, and petroleum. Basin a is suspected to be the extension of the benue trough across the study area, while basin b is the anambra basin. The group now holds a combined 90% licence interest in opl 905, a 22. This could have introduced an accuracy which is beyond the original data. Eocene lithic fills in the anambra basin and afikpo syncline is divisible into three main transgressiveregressive cycles reyment, 1965. This study aimed at determining the geology and depositional environmental of these formations through field relationship and grain size distribution morphologic studies.
The nkporo shale documents the trans gressive event that. The study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka formation. Sedimentological attributes and stratigraphic of nanka formation, anambra basin,nigeria acra 2e. Detrital rocks are formed by the sedimentation of minerals and rock fragments that were derived from mechanical breakdown of preexisting rocks in the source area, and were transported to a depositional site basin. Pdf the fish fauna of anambra river basin, nigeria. The tectonic, stratigraphic and organic geochemical evaluations of these basins suggest the similarity with the contiguous basins of chad and niger republics and sudan, where commercial oil discovery have been. How to merge pdfs and combine pdf files adobe acrobat dc. Onuoha department of geology, university of nigeria, nsukka, enugu state, nigeria. The niger delta basin, underlying a total area of over 256,000 km 2, is a cenozoic clastic buildout that rests on top of two older sedimentary entities benue trough and anambra basin within an aulacogen defined by the chain and charcot fracture zones. These sediments contain alternating shales and siltstones with occurrences of sandstone.
A study of hydrocarbon generation and expulsion of the. It extends northwestward into the niger valley, northward to the jos massif and northeastward as far as lafia. Tertiary niger delta akataagbada petroleum system no. Structural interpretation of part of anambra basin nigeria using aeromagnetic and landsat etm data. Diagenetic study of sandstone sediments in parts of. Rearrange individual pages or entire files in the desired order. Subsurface evaluation of source rock and hydrocarbon potential of the anambra basin, south eastern nigeria pdf.
These cycles correspond to major marine incursions in the late campanian, paleocene and eocene, representing second order depositional sequences murat, 1972. Ditch cutting samples from an exploratory nzam1 well located in the northwestern part of anambra basin were subjected to lithological. The codes for the regions and provinces are listed in klett and others 1997. P4and itiowe k5 1,5department of geology, university of port harcourt, port harcourt, nigeria 2 dept. Uzoegbu and others published lithostratigraphy of the maastrictian nsukka formation in the anambra basin, s.
Biostratigraphy and paleoenvironment of the coniacian awgu formation in nzam1 well, anambra basin, southeastern nigeria. This study has shown that there is more oil in the anambra basin than previous authors claimed, and the distribution of oil and gas in. Sedimentation in the anambra basin thus commenced with the early campanian early maastrichtian of the enugu and nkporo formations lateral equivalents which consist of a sequence of bluish to dark grey shale and mudstone locally with sandy shales, thin sandstones and shelly limestone beds. Profile line 3 appears to have passed through the centre or deepest part of the anambra basin. The sequence includes lower maastrichtian subbituminous coals in the anambra basin. The total aeromagnetic data covering the study area was subjected to first vertical derivative, spectral depth analysis, and source parameter imaging spi. Apr 05, 2017 stakeholders on water have asked the anambra imo river basin development authority to embark on the recycling or reuse of waste water to ensure rapid economic development of its catchment areas. Aromatic hydrocarbon distribution and calculation of oil and gas volumes in postsantonian shale and coal, anambra basin, nigeria, by i. Case studies of anambra and abakaliki basins, southeastern nigeria rita u. Pdf the study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka formation.
Although several works have proved the existence of oil and gas in the campanian to maastrichtian strata of the anambra basin, it is still. Aspects of the biology of clarias gariepinus in anambra river basin. The flow of the anambra river is released into the atlantic through various outlets forming the 25,000squarekilometre 9,700 sq mi niger delta region. Olaburaimo and akaegbobi, 2012a, 2012b and olaburaimo, 2012, 20. Nov 28, 20 this study is a contribution to the understanding of the play fairway in the anambra basin. The dataset used for the study are 2002 landsat image, 2007. It is believed to occupy a geographic position among the be nue trough, the middle niger depression, the niger del ta and the abakiliki anticlinorium figure 1.
A total of 22 occurrences have been reported across nigeria challenges facing solid mineral development in nigeria low metal prices depleted alluvial reserves of tin and columbite. Anambraimo river basin development authority asked to. Geochemistry of maastrichtian clastic sedimentary rocks. Province three digits to the right of region code 3162. The basin is a nwse trending embayment, perpendicular to the main axis of the benue trough and the niger delta basin fig. The anambra basin, it is generally characterized by sediments of cretaceous and younger ages. Hydrochemical study in the iullemeden aquifer system 79 4.
This study is a contribution to our understanding of the hydrocarbon potentials of the nkporo shale in the anambra basin, nigeria. The sediments of anambra basin include the albiansediments which comprise of asu river group. Petroleum system two digits to the right of province code 316205. Here is how you can manage the process of combining pdfs on both macs and pcs. This name later came to be shortened to anam bra anambra, the name it officially bears to date. Isotope study in the iullemeden aquifer system 85 4. Mgbenka department of zoology, university of nigeria, nsukka, enugu state, nigeria. Petroleum potentials of the nigerian benue trough and.
The basin is bounded to the south by the niger delta basin hinge line. Anambra basin showing the extension of ajali sandstone drawn from geological map of nigeria, gsn, 1994. Aspects of the biology of clarias gariepinus in anambra. Sedimentology and sequence stratigraphy of the nkporo group. Abstract aspects of the reproductive biology of the african catfish, c. Geographically, it is situated between longitude 7000e 7030e and latitude 6000n 6030n. The investigated sections consist of coarsening upward sequences with thick, dark gray shale at the base, grading upward through siltstones into. Sequence stratigraphic interpretation of late cretaceousearly paleogene sediments in the central part of southern anambra basin, nigeria. The basal shale unit of the enugu formation documents very few senegalinium bicavatum and sparse burrows of thalassinoides isp. Analysis of the sedimentological and stratigraphical characteristics of the deposits allix, 1987 shows three main period figure 3 in the evolution of the basin. Paleoecology of enugu and mamu formations in anambra basin. The sedimentary rocks comprise ancient cretaceous deltas, somewhat similar to the niger delta, with the nkporo shale, the mamu formation, the ajali sandstone and the nsukka formation as the main deposits. Anambra basin has about 6,000 m of sedimentary rocks. Assessment unit two digits to the right of petroleum system code 31620504.
The result from the first vertical derivative shows that the northern part of the area is covered by the young biotite granite of precambrian origin, and the western edge is covered by the old granite, gneisses, and migmatite of western. Integration of electrical resistivity and induced polarization for subsurface imaging around ihe pond, nsukka, anambra basin, nigeria. Accepted 23 august, 2010 structural analysis of joints and fault data obtained from exposures of the enugu and mamu formations. P 3 1,department of geology, university of port harcourt, port harcourt 2,3 dept. Anambra basin, enugu shale, rockeval pyrolysis, total organic carbon, source rock, thermal maturation introduction the anambra basin figure 1 which is a cretaceous basin is located in the southern part of the regionally extensive northeastsouthwest trending. Subsurface evaluation of source rock and hydrocarbon. This could have played, at least, a supportive role in producing the predominance of gas plays in the anambra basin. Diagenetic study of sandstone sediments in parts of anambra.
Oil seepages have also been reported from parts of the basin. Evidence from field relationship and sedimentological study adeigbe, o. Pdf the study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka. Before you combine the files into one pdf file, use merge pdf to draganddrop pages to reorder or to delete them as you like. Excitement as orient petroleum strikes oil in anambra. The stratigraphic evolution can be outlined using subsurface data and correlation along sections connecting several wells in the anambra basin. Geochemical and geophysical investigations of kaolin. The result from the first vertical derivative shows that the northern part of the area is covered by the young biotite granite of precambrian origin, and the western edge is covered by the old granite, gneisses, and. Though the anambra river basin was known to be rich in crude oil and gas deposits. Gravity models as tool for basin boundary demarcation. Anambra basin located in the south benue trough is a.
Assessment of aeroradiometric data of southern anambra. The stratigraphic successions in the bida basin and their relationship to those in the. Anambra basin, enugu shale, rockeval pyrolysis, total organic carbon, source rock, thermal maturation introduction the anambra basin figure 1 which is a cretaceous basin is located in the southern part of the regionally extensive northeastsouthwest trending benue trough. The dataset used for the study are 2002 landsat image, 2007 ikonos image, water quality variables and settlements point data. Department of geology, ekiti state university, ado ekiti nigeria olaburaimo a. Anambra basin in 2015, seven energy increased its footprint in south east nigeria, acquiring an additional 50% licence interest in opl 905. Pdf geology and depositional environment of campano. The study area lies within the anambra basin and it is made up of enugu. It is bounded to the north by bida basin and northern nigerian massif, to the east by benue trough, to the west by west african massif, and to the south by niger delta 14. It was done by estimating the geographic extent of the basin s petroleum system in order to create the areal extent maps.
Assessment of the suitability of some sites for aquaculture. Kinematics of faults and joints at enugu area of the anambra basin d. Dispersal patterns of the late cretaceous to early. Biostratigraphy and paleoenvironment of the coniacian awgu. It is frequently regarded as the northwestern extension of the anambra basin, both of which were major depocentres during the third major transgressive cycle of southern nigeria in late cretaceous times. Asu river group is the oldest stratigraphic unit in anambra basin. Anambra and bida basins indicates thats the successions of the anambra basin reached up to 8 km thickness compared with an average of 3. Nigeria is underlain by seven major sedimenta ry basins, viz. The anambra basin extends over a roughly triangular territory, estimated at about 95,000 km2 wide 1.
Palynological and sequence stratigraphy characterization of the earlylate campanian nkporo shale, orekpekpeimiegba area, anambra basin, nigeria adebayo olajide f. Subsurface evaluation of source rock and hydrocarbon potential of the anambra basin, south eastern nigeria iheanacho princewill ugochukwu dissertation. The basin is bounded to the south by the niger delta hinge line. The river is the most important feeder of the river niger below lokoja. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. The main objective was to simulate the hydrocarbon generation and expulsion in the nkporo source horizons encountered in igbariam1, iji1, and ajire1 wells drilled in the basin, using the onedimensional genesis zetaware basin. It extends northwestward into the niger valley, northward to the jos massif and northeastward into lafia. The anambra basin, located in the southern benue trough is a post santonian synclinal sedimentary structure containing over 5,000m thick of upper cretaceous to recent sediments. Sedimentology and depositional environment of the mid. Maximum sediment thickness in this area is about 6 km i.
Hydrocarbon generation indications from source rock to. Ten 10 representatives outcrop samples collected from two stratigraphic sections in the study. Geology and mineral resources of the lower benue trough. Pdf structural interpretation of part of anambra basin. The study area is part of anambra basin, south eastern nigeria. Sequence stratigraphic interpretation of late cretaceousearly. The origin and tectonic history of the benue trough and in.
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