Sedimentology and depositional environments of the. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. Palynofacies studies of sedimentary succession in ogbabu1 well was carried out on ninety 90 ditch cutting samples retrieved from ogbabu1 well in anambra basin, lower benue trough, nigeria with the aim of giving a detailed palynofacies study of the ogbabu1 well, anambra basin using sedimentology and palynology as geologic tools. A 12,000 m thick succession of overall regressive, offlapping sediments. Evaluation of the hydrocarbon maturity level of oil well. Nnpc, halliburton intensify oil search in inland basin the.
Heavy minerals and geochemical characteristics of sandstones as indices of provenance and source area tectonics of the ogwashiasaba formation, niger delta basin authors. Niger delta basin were carried out using 3d regional seismic merge of various. Tectonic extension at divergent boundaries where continental rifting is occurring can create a nascent ocean basin leading to either an ocean or the failure of the rift. Known as sedimentary basins, these features come in many shapes and sizes. Abstract nigerias search for increased oil and gas reserves requires the discovery of additional petroleum plays using more accurate exploration techniques like sequence stratigraphy. Baringonaivashamagadi basins 203 conclusions 206 controls on differences in structure and sedimentary fill 206 importance of the east african rift basins 206 acknowledgements 206 references 207 chapter 10 the coastal basins of somalia, kenya and tanzania by e.
The basin is structurally linked to the north with the termit basin with which. Stratigraphy and petroleum plays of the late to middle. The bida basin, which is one of the major inland sedimentary basins in nigeria, is oriented in the northwest southeastern direction and perpendicular to the main axis of the benue trough and the niger delta basin of nigeria fig. The niger traverses four countries, two of which niger and nigeria are named after it. Distribution of sedimentary formations in the bornu basin. Both are extensional basins bounded by ns striking faults which are assumed to be younger features that crosscut older ne. Sedimentological attributes and stratigraphic of nanka formation, anambra basin, nigeria acra 2e. The results show above m depth, sedimentary layers with resistivities in the range of 1 to 100 ohmm, which decrease with depth. It seems that these two relative gravity highs would merge towards the middle part. Therefore, the aim of this study is to beam a light on osun dr ainage basin, with a view.
Aspects of hydrocarbon potential of the tertiary imo shale. Various faults were also identified, illustrating the structural complexity of the mamfe basin, along the manyu river. The sedimentary basins of india, onland and offshore up to the 200m isobath, have an areal extent of about 1. Palynomorphs distribution, biostratigraphy and paleoecology study.
Both are extensional basins bounded by ns striking faults which are assumed to be younger features that crosscut older ne and nw striking faults of the area. Only about 10% of the areal extent of the basin lies within nigeria. The researcher found that the bulk of the hydrocarbon encountered in the niger delta basin was found to be within a depth range of 5,473,381 ft 1,668. Executive summary the dynamics of sedimentary basins the. Subject to section 6 of the interpretation act, the river basins development authori ties act 1979 is hereby repealed and the assets and liabilities of any authority established under the said act are hereby transferred respectively to the authority exercising func tions under this act in the area of operation of that authority. Stratigraphy of western nigeria offshore basin the stratigraphy of the eastern dahomey basin has been studied and discussed by various authors 1 11. Each country within the basin has unique geographic settings and a wide. The three sedimentary basins in nigeria are underlain by continental crust except in the niger delta, where the basement rock is interpreted to be oceanic crust. Trough and the niger delta are still not very clear due to stacking of the basins 2. The blue areas of most ancient oceanic crust jurassic are located in the western pacific, the central atlantic, and the western indian ocean muller et al. Source rock evaluation in the lake chad area of the bornu basin. It is frequently regarded as the northwestern extension of the anambra basin to the southeast. The structure of the goulfeytourba sedimentary basin chadcameroon.
Corporation, a parastatal of the federal government of nigeria, was encouraged to carry out oil exploration in bornu basin which is the nigerian sector of the megachad basin. The megachad basin covers all the rift basins associated with the west and central african rift system wcars 1 which lie within the confine of the ancient inland. Relations between sedimentary basins and petroleum provinces fig. Pdf analysis of petroleum system for exploration and risk.
Sedimentary basins of ethiopia geology of ethiopia. Geol201 sedimentary basins vancouver island university. Geology and mineral resources of nigeria nuhu george. The southern benue trough and anambra basin, southeastern nigeria. Structure and evolution of the mediterranean basins with wellcharacterized brackish intercalations germanic facies. At their largest, sedimentary basins can be hundreds to thousands of kilometers in horizontal dimensions and contain more than 10 15 m 3 of buried materials. Geology and mineral resources of nigeria springerlink. Pdf an overview of the geology and hydrogeology of nigeria.
Nigerias under explored and poorly understood frontier basins include the nigeria, chad, bida, dahomey, sokoto, and benue basins. Department of physics, university of port harcourt, port harcourt, nigeria email. Pdf download sedimentary basins and petroleum geology of. Samuel okechukwu onyekuru is currently a senior lectutrer in sedimentary and petroleum geology in the. Nnpc, halliburton intensify oil search in inland basin. Geological survey of nigeria agency has played an active role in the exploration for mineral deposits in nigeria. In this area, called the bederi high, existing seismic data quality is very poor, due to the large number of volcanic intrusions. The mapped area falls within the benue trough the oldest sedimentary rocks in nigeria is in this trough and they are of lower cretaceous age. A technical paper on sedimentary basins of india submitted by. Sedimentary succes sions in these basins are of middle mesozoic to recent age. Distribution of sedimentary formations in the bornu basin, nigeria olabode solomon o 1, adekoya john a 2, ola peter s 1 1.
The hydrocarbon reservoirs in this study were found to be in the agbada formation, which is in conformity with the geology of the niger delta, nigeria. Sedimentary basins and petroleum geology of the middle. The mineral resources so far reported in the trough by the geological survey of nigeria agency are discussed below. Basement geology in the sedimentary basins of nigeria. In the deepwater beyond the 200m isobath, the sedimentary area has been estimated to be about 1. Sedimentary basins and petroleum geology of the middle east. A sedimentary basin can be made just by erecting high land in an adjacent area by volcanism. Time slice fields and bounding regional faults sigma merge mapsemblance view at 2. Sedimentary basins in india india has 26 sedimentary basins covering an area of 3. Contains details on the geological units of nigeria and the associated mineral resources. Intracratonic basins form within stable continental interiors.
Foraminiferal stratigraphy and paleoecological interpretation. Sequence stratigraphic technique was applied to sediments in the xy field, onshore niger delta by integrating. The niger river basin, host to approximately 100 million people, is a. Convergent boundaries create foreland basins through tectonic compression of oceanic and continental crust during lithospheric flexure. Older sedimentary deposits were not preserved, probably because during the paleozoic early mesozoic, what is now nigeria was a broad regional basement uplift, with no major basin subsi dence for sediment accumulation. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. The anambra basin has become a subject of interest in recent years, following renewed search for hydrocarbon in nigeria s inland sedimentary basins to increase its reserve base. Five audiofrequency magnetotelluric amt soundings were collected northwestsoutheast along the manyu river in the mamfe sedimentary basin of southwestern cameroon. Deep cretaceous plays of a transform margin, new ideas in the paleogene, and hidden plays of neogene shale structures 17. They are pervasive on earth and form in response to complex geologic processes.
The benue trough is one of the seven main sedimentary structural features in the sene nigeria. The northwest southeastern trending bida basin forms one of the major inland sedimentary basins in nigeria. Geological survey editorial standards or with the north american stratigraphic. 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. Pdf analysis of petroleum system for exploration and. Some well known sedimentary basins include the great artesian basin, the murray basin and the officer basin.
The stratigraphic harmonization of african sedimentary. Abstract nigerias search for increased oil and gas reserves requires the discovery of additional. Purchase sedimentary basins and petroleum geology of the middle east 1st edition. The sediments used for this study were obtained from the kolmani river 1well interval 900 ft9140 ft.
Nigeria is underlain by seven major sedimenta ry basins, viz. Tectonics is needed to make sedimentary basins, but the record of the basin itself is sedimentary. Executive summary the dynamics of sedimentary basins. The southern nigeria sedimentary basin includes the lagososse and the niger delta basins that are separated by the benin hinge line the okitipupa ridge.
The ebook is optimized for ereader devices and apps, which means that it offers a much better digital reading experience than a pdf, including resizable text and. Total thickness as mentioned above, thick sedimentary formations in bor nu basin mainly concentrate in the three depressions a, c and d fig. Pdf the structure of the goulfeytourba sedimentary basin chad. Many such basins contain extensive multilayered aquifer systems consisting of permeable sediments laid down at various times in the past. There had, however, been strong tendencies in the past to merge the anambra basin with the niger delta basin as one extensive coastal basin or simply to, consider one an extension of the other 4. Sedimentary basins are an important source of groundwater within australia. A pdf is a digital representation of the print book, so while it can be loaded into most ereader programs, it doesnt allow for resizable text or advanced, interactive functionality. Pdf sedimentary basins and petroleum geology of the middle east download full ebook.
Following on from the first 2 books in the series, sedimentary basins of the world, which covered chinese sedimentary basins volume 1 and south pacific sedimentary basins volume 2, comes volume 3, on african basins. Jul 19, 2017 the nigerian national petroleum corporation nnpc and halliburton corporation have reached an agreement that will speed up oil discovery in the inland sedimentary basins. Geology and mineral resources of nigeria nuhu george obaje. Estimation of reservoir potentials of two wells in niger. The petroleum geology and prospectivity of the neo. The nigerian national petroleum corporation nnpc and halliburton corporation have reached an agreement that will speed up oil discovery in the inland sedimentary basins. Foraminiferal investigation of the kolmani river 1 well yielded a total of forty two 42 species.
The nigeria chad basin is part of the bornu basin, an intracratonic rift basin having an area of 2,335,000 km 2 and covering chad, niger, the cameroun republics, and northeastern part of nigeria. The subsidence can result from a variety of causes that include. Waec gce past questions and answers free download pdf all. Sedimentary basins form primarily in convergent, divergent and transform settings. Part 3 takes the mineral resources of nigeria one on one, their geological environment, mode. Jul 09, 2009 contains details on the geological units of nigeria and the associated mineral resources. Cratonic basins convergence related basins strikeslip basins. One of the basic elements of petroliferous basins is thick sedimentary formations, in terms of oil and gas enrichment, areas with thick sedimentary formations have high oil and gas potential than areas with thin. West africa zone offshore and onshore sedimentary basins in the republic of benin, cote divoire, ghana, togo and western offshore nigeria mr. Sedimentary rocks of cretaceous and latter deposits ar e found in the southern sections of the osun basin ifabiyi, 2005. The mixed provenance of the sandstones can be traced to the southwestern and southeastern basement complex consisting of granites, gneisses, etc. The stratigraphic harmonization of african sedimentary basins. Geological developments in the basin in terms of basin evolution and structural features have been discussed by many authors.
African basins, volume 3 sedimentary basins of the world. Heavy minerals and geochemical characteristics of sandstones as indices of provenance and source area tectonics of the ogwashiasaba formation, niger delta basin. The dynamics of sedimentary basins the national academies press. In this chapter, the chronology of the main geologic phenomena that occurred in the country are sketched, emphasizing those that generated sedimentary deposits that, nowadays, constitute source rocks, reservoir rocks, sealing units and overburden sequences and fi nally hydrocarbon. It is a shallow, linear depression with sedimentary fill of about 3,000 m thick udensi and osazuwa, 2004. Stratigraphy and sedimentology of the niger delta sciendo. Don kotowych, general manager, tgs, led his companys delegation to the 4day meeting in dpr headquarters in lagos and gave a technical presentation on the companys ability to execute the project. The foraminiferal assemblages comprise 86% arenaceous benthonics, 4% calcareous benthonics and 8% planktonic foraminifera. Part 1 discusses the geology of the crystalline rocks and their regional distribution while the sedimentary basins constitute the subject of part 2.
Most of the wells that penetrated the basement are in the eastern dahomey embayment of western nigeria. Nigerias frontier basinsunrealized rift system hydrocarbon. The evolution of the southern sedimentary basins began in the early cretaceous with the formation of the benueabakaliki trough as a failed arm of the rift triple junction associated with the separation of the african and south american continents and subsequent opening of the south atlantic 2729. After the werfenian episode when continental or brackish influences predominated, a marine transgression occurred which probably came from the east tethys and resulted in deposition of carbonate platform sediments. The structure of the goulfeytourba sedimentary basin chad. The lower benue trough like other sedimentary basins in nigeria is found to be endowed with mineral resources.
Few ostracod and gastropods shells were recovered and they make up the remaining 2% of the assemblages. Sedimentological attributes and stratigraphic of nanka formation, anambra basin,nigeria acra 2e. Characterization of the upper cretaceous sediments in the. Sedimentary basins are regions of earth of longterm subsidence creating accommodation space for infilling by sediments.
Pdf sequence stratigraphic studies have been carried out using subsurface. The soundings were performed with frequencies in the range 3 to 2500 hz and covered a distance of approximately 28 km. Jan 09, 2016 pdf sedimentary basins and petroleum geology of the middle east download full ebook. Geology and mineral resources of the lower benue trough. Sounding curves and geoelectric and geological sections were processed, and the results. Regional geology of nigeria geology, nigeria the mapped area falls within the benue trough the oldest sedimentary rocks in nigeria is in this trough and they are of lower cretaceous age. The well was drilled by shell nigeria exploration and production company snepco as part of their oil exploration programme in inland basins of nigeria. Pdf petroleum system elements within the late cretaceous and.
P4and itiowe k5 1,5department of geology, university of port harcourt, port harcourt, nigeria 2 dept. Thus, it is important to understand how the river and its. Palynofacies studies of sedimentary succession in ogbabu1. The southern rift basins the omo and chew bahir basins lie within the broadly rifted zone of the southern ethiopia bordering northern kenya. Examples of a smaller intracratonic basins are the proterozoic athabasca basin in saskatchewan and the mesozoic bowser basin in northwestern bc. Part 3 presents the mineral resources of nigeria, their geological environment, mode of occurrence, localities and where possible their estimated reserves. The niger river basin is an extraordinary asset for the nine countries that are within its watershed and for the broader west and central africa region. Structural interpretation of the mamfe sedimentary basin. Origin, depositional histories, and petroleum systems vii. A good example is the western canada sedimentary basin extending from the eastern side of the rocky mountains to central manitoba. Sequence stratigraphy of the niger delta, delta field, offshore nigeria. Africa covers a larger land area than the usa, europe, india and the asean nations put together.