Sedimentological attributes and stratigraphic of nanka formation, anambra basin,nigeria acra 2e. Mr onwumere who led a team of experts to assess the volume of gas and crude reserves in the anambra river basin as well as gauge the preparedness of the state government in the establishment of an indigenous refinery through its oil company, orient petroleum resources, said the team was impressed with what it saw on the ground. Onuoha department of geology, university of nigeria, nsukka, enugu state, nigeria. Basin g is a continuation of anambra basin in the northern direction. The anambra basin consists of four lithostratigraphic units fig. Geology and mineral resources of the lower benue trough, nigeria. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough.
Controversy surrounding the stratigraphy of the anambra basin. The basin data is derived from a lower resolution grid which has been upsampled using gmt. Maastrichtian mamu formations coal and shale succession exposed at the okobo coal mine region of anambra basin in kogi state, nigeria were analyzed to assess their hydrocarbon generation potential and thermal maturity. The river is the most important feeder of the river niger below lokoja. Onitsha was selected for this study being strategically located and drained by several rivers including the river niger. Anambra basin has about 6,000 m of sedimentary rocks. It was done by estimating the geographic extent of the basins petroleum system in order to create the areal extent maps. Biostratigraphy and paleoenvironment of the coniacian awgu formation in nzam1 well, anambra basin, southeastern nigeria. Petroleum potentials of the nigerian benue trough and anambra. Obala nkpume na eti mkpili, oke mmili ndu, mmili ala naazu omambala, the mystic arteryvein of the dark race. Nov 28, 20 this study is a contribution to the understanding of the play fairway in the anambra basin. Kinematics of faults and joints at enugu area of the anambra. The main oil source formations of the anambra basin.
Extent and distribution of groundwater resources in parts of. Estimation of magnetic contact location and depth of. Spectral analysis of gravity and magnetic anomalies due to two dimensional structures. Basinwide stratigraphic correlation across the anambra basin using base of the mamu formation as a datum. Oil seepages have also been reported from parts of the basin. Excitement as orient petroleum strikes oil in anambra. From the dropdown menu select choose default program, then click browse and find the desired program. Depositional environments, organic richness, and petroleum. To download the pdf, click the download link below. The anambra basin has become a subject of interest in recent years, following renewed search for hydrocarbon in nigerias inland sedimentary basins to increase its. This page bundles the available data for the anambra basin in the africa. Orient petroleum resources plc opr was established to harness the vast but mostly untapped mineral, agricultural and human resources, especially hydrocarbon deposits in anambra basin, for the industrialization of the area, improvement of the socioeconomic wellbeing of the people while creating value for the stakeholders.
This study is a contribution to the understanding of the play fairway in the anambra basin. Stratigraphic setting sedimentation in the lower benue trough commenced with the marine neocomian albian asu river group. Post deformational sedimentation in the lower benue trough, therefore, constitutes the anambra basin. Anambra basin is one of the basins in nigeria, habouring the largest deposit of subbituminous coal and lignite. Subsurface evaluation of source rock and hydrocarbon. A total of 102 bagrid fishes belonging to 4 genera and 7 species were subjected to parasitological investigation, only 32 fishes were infected with a parasitic prevalence of 31. Sedimentation in the anambra basin thus commenced with the early campanian early maastrichtian of the enugu and nkporo formations lateral equivalents which. Sedimentology and sequence stratigraphy of the nkporo. The tectonic evolution of the sedimentary basins of southeastern nigeria started with the.
Pdf structural, stratigraphic and combination traps on. Anambra basin showing the extension of ajali sandstone drawn from geological map of nigeria, gsn, 1994. View of geothermal gradient, curie point depth and heat flow. It is bounded to the west by the precambrian basement complex rocks of western nigeria, to the east by the abakaliki anticlinorium, and to the south by the northern portion of the niger delta petroleum province fig. The marginalshallow marine nkporo group is the basal lithostratigraphic unit of the late campanianmaastrichtian successions of the anambra basin, nigeria fig. Paleogeography, sedimentation and tectonics of the upper. Biostratigraphy and paleoenvironment of the coniacian awgu. P4and itiowe k5 1,5department of geology, university of port harcourt, port harcourt, nigeria 2 dept. Anambra river1, ihadagu1 and very scanty 2d seismic information, anambra basin is under explored. State, anambra basin, nigeria, is bounded by latitudes 60 49i 50. Stratigraphy and sedimentology of the niger delta 7 during the middlelate eocene, sediment was deposited fig. To give a concise geological description of the outcrops. Sequence architecture of the campanian nkporo and eocene nanka formations of the anambra basin, nigeria.
The anambra basin is about 40,000 km2 in size ogala, 2011 and is bounded to the west by the okitipupa ridge, in the east by abakaliki basin, and in the south by the niger delta basin fig. It was done by estimating the geographic extent of the basin s petroleum system in order to create the areal extent maps. Most of the exposures of the lithofacies comprising the anambra sedimentary basin fill are exposed on the eastfacing scarp of the cuesta. Onedimensional spectral analysis of aeromagnetic anomalies and curie depth isotherm in the anambra basin of nigeria. The study area is located in the southern part of the anambra basin and covers about 2200 km 2. Sedimentology and sequence stratigraphy of the eocene nanka. The basin is bounded to the south by the niger delta hinge line.
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 made. The main oil source formations of the anambra basin, southeastern nigeria. The oldest sediment in the anambra basin is nkporo group nwajide, 1990. It was deposited into the basin in late campanian, comprising nkporo shale, owelli sandstone and enugu shale reyment, 1965 and obi, 2001. If you want to associate a file with a new program e. It was deposited in early maastrichtian kogbe, 1989 and obi, 2000. The total aeromagnetic data covering the study area was subjected to first vertical derivative, spectral depth analysis, and source parameter imaging spi. Download a brief history of the internet pdf 87c6bb4a5b ebook free download for mobile phone textpencemaran teluk buyat pdf downloadsuzana panariti menaxhimi i projektit pdf downloadassinar digitalmente em pdf downloadinternal resistance and electromotive force pdf to downloadaipmt 2012 paper free download pdfpopular lies about graphic design. The stratigraphic setting of southern nigeria comprises sediments of three major sedimentary cycles. Source rock assessment and hydrocarbon prospects of anambra basin. Ditch cutting samples from an exploratory nzam1 well located in the northwestern part of anambra basin were subjected to lithological. Pdf source rock assessment and hydrocarbon prospects of.
The dataset used for the study are 2002 landsat image, 2007. The anambra basin fill contains four thirdorder sedimentary cycles. This could have introduced an accuracy which is beyond the original data. Of the four, only the dahomey basin has yielded commercially viable oil and gas deposits, as well as the vast undeveloped bitumen discoveries adegoke. It is accessible by motorable roads and footpath, especially those created by the villagers to fetch water from the pond. It extends northwestward into the niger valley, northward to the jos massif and northeastward into lafia. Pdf the study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka. The basin is a nwse trending embayment, perpendicular to the main axis of the benue trough and the niger delta basin fig.
The investigated sections consist of coarsening upward sequences with thick, dark gray shale at the base, grading upward through siltstones into. Ladtpo department of geology and mlnera sciences university of llorln p. Play fairway evaluation of the anambra basin, southeast. This study aimed at reconstructing the palaeoenvironment of the nkporo shale outcropping in this part of the basin through field relationship and micropalaeontological studies. The study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka formation.
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. Anambraimo river basin development authority asked to. Anambra basin is one of the energyrich inland sedimentary basins in nigeria 153 it is a nearly triangular shaped embayment covering about 3000 km 2 with a total sedimentary thickness of approximately 9 km 2. The anambra basin is situated at the southwestern extremity of the benue trough. Of the nine rift basins in nigeria, hydrocarbons have been discovered in only four anambra basin, dahomey basin, southern bornu basin, and the gongola basinyola arm of the upper benue trough. File extension basin simple tips how to open the basin file. Nigeria finds oil and gas in commercial quantities in anambra. Olajide femi adebayo1, akpo emuobosa orijemie2,adeyinka oluyemi aturamu1. Pdf geology and depositional environment of campano.
Parasitological investigation of bagrid fishes in anambra river basin in anambra state, nigeria was carried out for two months between the month of april and may, 2015. This assessment was carried out using geochemical tools toc and rockeval pyrolysis. Download your complete project topics and materials. Organic geochemical characterisation of the campano. 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. Geological survey editorial standards or with the north american stratigraphic.
Aromatic hydrocarbon distribution and calculation of oil and gas volumes in postsantonian shale and coal, anambra basin, nigeria, by i. The study area which is part of the nkporo group lies within the benin flank of the anambra basin. The images are hyperlinks and will open up a separate window with a high resolution pdf image of the map. Sedimentology and sequence stratigraphy of the nkporo group. Accepted 23 august, 2010 structural analysis of joints and fault data obtained from exposures of the enugu and mamu formations. Sedimentology,sequence stratigraphy,anambra basin,nanka formation and eocene. Aromatic hydrocarbon distribution and calculation of oil and gas volumes in postsantonian shale and coal, anambra basin, nigeria. Kinematics of faults and joints at enugu area of the anambra basin d.
The first two cycles belong to the presantonian sediments while the third cycle belongs to postsantonian sediments which are. Introduction this study examines part of the sedimentary units of the eocene nanka formation of anambra basin exposed at lat. Flow determination of some parts of lower benue trough and anambra basin, nigeria, using high resolution aeromagnetic data download download pdf. Subsurface evaluation of source rock and hydrocarbon potential of the anambra basin, south eastern nigeria iheanacho princewill ugochukwu dissertation. 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. Petroleum potentials of the nigerian benue trough and. The areal extent maps were generated using the reports of the stratigraphic subsurface horizons of amansiodo1, ihandiagu1, igbariam1, alo1, anambra river1, akukwa1, and nzam1. Sedimentological characteristics of ajali sandstone at okigwe. Sedimentological characteristics of ajali sandstone at. Anambra basin is a cretaceous depocentre that received campanian to tertiary sediments nwajide, 1990 and obi, 2000. The areal extent maps were generated using the reports of the stratigraphic subsurface horizons of amansiodo1, ihandiagu1, igbariam1, alo1, anambra river1, akukwa1, and. This name later came to be shortened to anam bra anambra, the name it officially. Simpson 1954, reyment 1965, hogue and ezepue 1977 and ladipo 1986 have discussed the.
Gravity models as tool for basin boundary demarcation. 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. Assessment of the suitability of some sites for aquaculture. The basin is bounded to the south by the niger delta basin hinge line. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. The southern benue trough and anambra basin, southeastern nigeria. The first and the easiest one is to rightclick on the selected basin file.
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. Geology and mineral resources of the lower benue trough. The dataset used for the study are 2002 landsat image, 2007 ikonos image, water quality variables and settlements point data. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader. Alternatively, you can also download the pdf file directly to your computer, from where it can be opened using a pdf reader. Toc and rockeval pyrolysis results of the studied samples jude e. The anambra river flows 210 kilometres mi into the niger river and is found in anambra, nigeria. 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. During the visit, the team also inspected the 20 kilometre access road to the oil wells and the 10 kilometre flow line for evacuating crude to a spot at anambra river basin from where evacuation. It extends northwestward into the niger valley, northward to the jos massif and northeastward as far as lafia. A sequence stratigraphic model for the group was developed by nwajide and reijers 1996, on the basis of stratigraphic analysis of a composite section located at leru, near okigwe.
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