The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. The study area is located in the southern part of the anambra basin and covers about 2200 km 2. Sequence architecture of the campanian nkporo and eocene nanka formations of the anambra basin, nigeria. It was done by estimating the geographic extent of the basins petroleum system in order to create the areal extent maps. Ditch cutting samples from an exploratory nzam1 well located in the northwestern part of anambra basin were subjected to lithological.
Anambra basin has about 6,000 m of sedimentary rocks. It is accessible by motorable roads and footpath, especially those created by the villagers to fetch water from the pond. Stratigraphy and sedimentology of the niger delta 7 during the middlelate eocene, sediment was deposited fig. 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. The southern benue trough and anambra basin, southeastern nigeria. Depositional environments, organic richness, and petroleum. It was done by estimating the geographic extent of the basin s petroleum system in order to create the areal extent maps. Anambra basin is one of the basins in nigeria, habouring the largest deposit of subbituminous coal and lignite. The basin is bounded to the south by the niger delta basin hinge line. The basin is a nwse trending embayment, perpendicular to the main axis of the benue trough and the niger delta basin fig.
Excitement as orient petroleum strikes oil in anambra. The marginalshallow marine nkporo group is the basal lithostratigraphic unit of the late campanianmaastrichtian successions of the anambra basin, nigeria fig. The areal extent maps were generated using the reports of the stratigraphic subsurface horizons of amansiodo1, ihandiagu1, igbariam1, alo1, anambra river1, akukwa1, and nzam1. From the dropdown menu select choose default program, then click browse and find the desired program. The first and the easiest one is to rightclick on the selected basin file. Sedimentological characteristics of ajali sandstone at okigwe. The main oil source formations of the anambra basin, southeastern nigeria.
Geology and mineral resources of the lower benue trough, nigeria. The study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka formation. This page bundles the available data for the anambra basin in the africa. Onedimensional spectral analysis of aeromagnetic anomalies and curie depth isotherm in the anambra basin of nigeria. Anambra basin is a cretaceous depocentre that received campanian to tertiary sediments nwajide, 1990 and obi, 2000. Biostratigraphy and paleoenvironment of the coniacian awgu formation in nzam1 well, anambra basin, southeastern nigeria. Anambra basin showing the extension of ajali sandstone drawn from geological map of nigeria, gsn, 1994. The river is the most important feeder of the river niger below lokoja. 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. Kinematics of faults and joints at enugu area of the anambra basin d. Ladtpo department of geology and mlnera sciences university of llorln p. Biostratigraphy and paleoenvironment of the coniacian. 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. Sedimentation in the anambra basin thus commenced with the early campanian early maastrichtian of the enugu and nkporo formations lateral equivalents which.
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. Oil seepages have also been reported from parts of the basin. Assessment of the suitability of some sites for aquaculture. It was deposited into the basin in late campanian, comprising nkporo shale, owelli sandstone and enugu shale reyment, 1965 and obi, 2001. This name later came to be shortened to anam bra anambra, the name it officially. Gravity models as tool for basin boundary demarcation.
Basinwide stratigraphic correlation across the anambra basin using base of the mamu formation as a datum. 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. Subsurface evaluation of source rock and hydrocarbon potential of the anambra basin, south eastern nigeria iheanacho princewill ugochukwu dissertation. Sedimentology and sequence stratigraphy of the eocene nanka. The main oil source formations of the anambra basin. 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. Stratigraphic setting sedimentation in the lower benue trough commenced with the marine neocomian albian asu river group. Basin g is a continuation of anambra basin in the northern direction. The dataset used for the study are 2002 landsat image, 2007.
View of geothermal gradient, curie point depth and heat flow. The anambra basin consists of four lithostratigraphic units fig. Nov 28, 20 this study is a contribution to the understanding of the play fairway in the anambra basin. Of the four, only the dahomey basin has yielded commercially viable oil and gas deposits, as well as the vast undeveloped bitumen discoveries adegoke. The dataset used for the study are 2002 landsat image, 2007 ikonos image, water quality variables and settlements point data. 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. Estimation of magnetic contact location and depth of. 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 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. Olajide femi adebayo1, akpo emuobosa orijemie2,adeyinka oluyemi aturamu1.
Biostratigraphy and paleoenvironment of the coniacian awgu. Accepted 23 august, 2010 structural analysis of joints and fault data obtained from exposures of the enugu and mamu formations. Flow determination of some parts of lower benue trough and anambra basin, nigeria, using high resolution aeromagnetic data download download pdf. It was deposited in early maastrichtian kogbe, 1989 and obi, 2000. Toc and rockeval pyrolysis results of the studied samples jude e. Sedimentological characteristics of ajali sandstone at. The anambra basin fill contains four thirdorder sedimentary cycles. Onuoha department of geology, university of nigeria, nsukka, enugu state, nigeria. Anambra river1, ihadagu1 and very scanty 2d seismic information, anambra basin is under explored. Sedimentology and sequence stratigraphy of the nkporo. This assessment was carried out using geochemical tools toc and rockeval pyrolysis.
The basin is bounded to the south by the niger delta hinge line. Onitsha was selected for this study being strategically located and drained by several rivers including the river niger. Aromatic hydrocarbon distribution and calculation of oil and gas volumes in postsantonian shale and coal, anambra basin, nigeria. Play fairway evaluation of the anambra basin, southeast. The anambra river flows 210 kilometres mi into the niger river and is found in anambra, nigeria. Aromatic hydrocarbon distribution and calculation of oil and gas volumes in postsantonian shale and coal, anambra basin, nigeria, by i. 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. Paleogeography, sedimentation and tectonics of the upper. 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. P4and itiowe k5 1,5department of geology, university of port harcourt, port harcourt, nigeria 2 dept. The basin data is derived from a lower resolution grid which has been upsampled using gmt. 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. The first two cycles belong to the presantonian sediments while the third cycle belongs to postsantonian sediments which are.
It extends northwestward into the niger valley, northward to the jos massif and northeastward into lafia. Subsurface evaluation of source rock and hydrocarbon. Simpson 1954, reyment 1965, hogue and ezepue 1977 and ladipo 1986 have discussed the. The total aeromagnetic data covering the study area was subjected to first vertical derivative, spectral depth analysis, and source parameter imaging spi. Sedimentology,sequence stratigraphy,anambra basin,nanka formation and eocene. 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. Introduction this study examines part of the sedimentary units of the eocene nanka formation of anambra basin exposed at lat. 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 study is a contribution to the understanding of the play fairway in the anambra basin. Pdf geology and depositional environment of campano. Anambraimo river basin development authority asked to. Geology and mineral resources of the lower benue trough.
Pdf the study area lies within the anambra basin and it is made up of enugu shale, mamu formation, ajali sandstone, and nsukka. If you want to associate a file with a new program e. The areal extent maps were generated using the reports of the stratigraphic subsurface horizons of amansiodo1, ihandiagu1, igbariam1, alo1, anambra river1, akukwa1, and. This study aimed at reconstructing the palaeoenvironment of the nkporo shale outcropping in this part of the basin through field relationship and micropalaeontological studies. Click the download now button to get the complete project work instantly. To download the pdf, click the download link below. Anambra basin is one of the energyrich inland sedimentary basins in nigeria. Kinematics of faults and joints at enugu area of the anambra. Pdf structural, stratigraphic and combination traps on. The tectonic evolution of the sedimentary basins of southeastern nigeria started with the. 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.
State, anambra basin, nigeria, is bounded by latitudes 60 49i 50. 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. Sedimentology and sequence stratigraphy of the nkporo group. 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. It extends northwestward into the niger valley, northward to the jos massif and northeastward as far as lafia. Petroleum potentials of the nigerian benue trough and anambra. 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. 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. Sedimentological attributes and stratigraphic of nanka formation, anambra basin,nigeria acra 2e. Petroleum potentials of the nigerian benue trough and.
File extension basin simple tips how to open the basin file. 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. The images are hyperlinks and will open up a separate window with a high resolution pdf image of the map. The anambra basin is situated at the southwestern extremity of the benue trough.
Obala nkpume na eti mkpili, oke mmili ndu, mmili ala naazu omambala, the mystic arteryvein of the dark race. Alternatively, you can also download the pdf file directly to your computer, from where it can be opened using a pdf reader. Geological survey editorial standards or with the north american stratigraphic. Post deformational sedimentation in the lower benue trough, therefore, constitutes the anambra basin. Pdf source rock assessment and hydrocarbon prospects of. Extent and distribution of groundwater resources in parts of. The study area which is part of the nkporo group lies within the benin flank of the anambra basin. Download your complete project topics and materials. This could have introduced an accuracy which is beyond the original data. The stratigraphic setting of southern nigeria comprises sediments of three major sedimentary cycles. The investigated sections consist of coarsening upward sequences with thick, dark gray shale at the base, grading upward through siltstones into. Controversy surrounding the stratigraphy of the anambra basin. Most of the exposures of the lithofacies comprising the anambra sedimentary basin fill are exposed on the eastfacing scarp of the cuesta.
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