A new threefold lithostratigraphic subdivision is introduced for the niger delta subsurface, comprising an upper sandy benin formation, an intervening unit of alternating sandstone and shale named the agbada formation, and a lower shaly akata formation. The iullemeden basin, also known as the sokoto basin spans mali, western niger, northwest nigeria and northern benin and began accumulating sediments in the jurassic, followed by the maastrichtian rima group, which records a brackish environment. Download the complete project topic and material chapter 15 titled determination of the sedimentological and geochemical characteristics of the sediment in the niger delta basin here on iprojecttopics. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. Sedimentary succes sions in these basins are of middle mesozoic to recent age. Geology and mineral resources of the lower benue trough. An overview of the geology and hydrogeology of nigeria. Geology department ahmadu bello university zaria, nigeria e.
Subsidence of the african continental margin and cooling of the newly. Abstract in the niger delta province, we have identified one petroleum systemthe tertiary niger delta akataagbada petroleum system. Stratigraphy and sedimentology of the niger delta 7 during the middlelate eocene, sediment was deposited fig. The niger delta basin is underlain by three formations, which include the benin, agbada and akata formations. The field lies between latitude 80 20 00n and 80 50 00n and longitude 60 30 00 and. There are some natural hazards in the country of niger, one of which is the recurring occurrences of drought. This basin is located between latitude 4 and 5 north and longitude 820. Doc geology of nigeria vincent kalu and stanless pee. Sedimentology and ichnology of late oligocene delta front. Niger delta akataagbada petroleum system of9950h, chapter a. The combined occurrence of rift structures, basin subsidence, rapid progradation of deltaic systems, development of growth faults and. Rahaman preliminary report on the field relationships of the basement complex rocks around igarra, midwest i. Pdf sedimentology and ichnology of neogene coastal swamp.
Aspects of the geology and groundwater conditions of asaba, nigeria akpoborie 1, i. Maps showing the geological setting of the niger delta in a section 8. The coastal sedimentary basin of nigeria has been the scene of three depositional cycles. The tertiary niger delta basin located in southern nigeria at the inland margin of the gulf of guinea is situated at the southernmost extremity of the elongated intracontinental benue trough.
In the niger delta and other very recent rapid depositional areas, shales will also move plastically and form shale diapers, much like salt diapers. Ojo and adebayo 2001 studied the miospore biostratigraphy of agbada formation, eastern niger delta basin, while adebayo et al. The niger delta basin lithic fill is considered to be selfcontained in terms of its structural geology, since the ns and nwse trends of the underlying basement have not controlled the arcuate, shorelineparallel depobelt configuration dominating the delta tectonics. The bida basin, also known as the midniger or nupe basin, is located in westcentral nigeria figure.
Aspects of the geology and groundwater conditions of asaba. During the cenozoic, until the middle miocene, the niger delta grew through pulses of sedimentation over an oceanwarddipping continental basement into the gulf of guinea. Keywords oil generation eocene niger delta source rock northern delta depobelt introduction the niger delta basin, located on the western edge of the african continent and southern part of nigeria, covers an area of 75,000 km2 and consists of 900012,000 m of. Geological section through the sedimentary layers of the niger delta s mouth 9. Opening of the gulf of guinea and geological history of the. The field uzot is an onshore field located in the western part of the niger delta basin figure 1a. Regional geologic setting the niger delta basin is situated in the gulf of guinea in equatorial west africa, between latitudes 30n and 60n and longitudes 50e and 80e reijers et al, 1996 fig. Nov, 2015 7the niger delta province petroleum geology i ss 2014 facies distribution of the niger delta fig. It has an aerial extent of 75,000 km 2 and a total estimated area of 300,000 km 2. Several works carried out in the niger delta have revealed the tectonic history, sedimentology, stratigraphy, depositional environments and the petroleum potential of the basin 8,9,10,11,12, 14. Petrophysical analysis of openhole geophysical logs. Modeling hydrocarbon generation potentials of eocene. This was aimed at increasing the resolution for prediction of reservoir, seal, and source rocks in the eastern part of the basin. The niger delta is situated within the continental margin of the gulf of guinea in southern niger delta basin, it borders the atlantic ocean and extend from about latitude 3 and 6 n longitudes 5 and 8 e.
Department of geology of the anambra state university uli, for their concern, prayers, encouragement and understanding. The niger delta basin is situated at the north eastern margin of the gulf of guinea on the west coast of africa and it covers an area of about 75,000km 2 and is at least 11km deep in its deepest parts 14, 15. Stratigraphic column showing the three formations of the niger delta. Palynostratigraphy, paleoclimate and paleoenvironment of a. Well logs, biostratigraphic data, seismic data and semblance map which together form a multidisciplinary data approach, were utilized in the geological evaluation of hydrocarbon prospect fobfield, onshore coastal swamp depobelt in the niger delta basin. In the niger delta, the upper floodplain is swampy and has a forest of tropical trees whiteman, 1982. An estimate of oil window in nigeria niger delta basin from recent studies j. An estimate of oil window in nigeria niger delta basin. The delta is over 12 km thick and occupies an area of 75,000 km2 in the gulf of guinea. Geology and mineral resources of the lower benue trough, nigeria 1fatoye f. Predicting petroleum generation is a critical issue in prospect evaluation for the deeper prospects because of its economic implications. Exploration activities have been concentrated in the onshore part of this basin but as the delta becomes better understood. We suggest that the distinctive rightangled bends of the south american and african coasts result from three cretaceous. Geologic map of niger delta basin showing location of study well.
Geology of niger delta the niger delta basin is located on the continental margin of the gulf of guinea in between latitudes 3 and 6 n and longitudes 5 and 8 e. Diagrammatic representation of the stratigraphic evolution of the niger delta. Schoeneich geology department ahmadu bello university zaria, nigeria e. Keywords oil generation eocene niger delta source rock northern delta depobelt introduction the niger delta basin, located on the western edge of the african continent and southern part of nigeria, covers an area of 75,000 km2 and consists of 900012,000 m of clastic sediments ojo et al.
The basin is deformed by large synsedimentaty faults, roll. Nov 21, 2017 the niger delta basin has area coverage of about 75,000 km 2 and consists of an overall regressive clastic sequence which reaches a maximum thickness of about 12,000 m in the central part of the basin where there is maximum subsidence merki 1972. Surface geology shown on the african plate, major cretaceous rift basins and breakup direction shown. Assessment of undiscovered petroleum in the tertiary niger delta akataagbada petroleum system no.
The metallic resources include gold, tin, uranium, iron ore and molybdenum. Sequence stratigraphy and depositional environments of middle. The niger delta basin the cenozoic niger delta is situated at the intersection of the benue trough and the south atlantic ocean where a triple junction developed during the separation of the continents of south america and africa in the late jurassic whiteman, 1982. The niger delta is the delta of the niger river sitting directly on the gulf of guinea on the atlantic ocean in nigeria. The province covers 300,000 km 2 and includes the geologic extent of the tertiary niger delta akata. The rdr basin figure 1, is one of the coastal basins in the southwest region of cameroon and represents the southeastern portion of the niger delta in the gulf of guinea 37. The niger delta is a prolific oil province within the west african subcontinent. The niger delta basin, also referred to as the niger delta province, is an extensional rift basin located in the niger delta and the gulf of guinea on the passive continental margin near the western coast of nigeria with suspected or proven access to cameroon, equatorial guinea and sao tome and principe. See below for the abstract, table of contents, list of figures, list of tables, list of appendices, list of abbreviations and chapter one. Human activities with direct environmental impacts and population growth play a decisive role besides climate change.
Geology of the area the niger delta is one of the signi. Tertiary niger delta akataagbada petroleum system no. Fundamentals of petroleum geology pdf free download. As a step towards understanding this geohistory, this study examines the stratigraphy and sedimentary structures of the umunya section of the eocene nanka formation, a component of the ameki group of the niger delta basin. It is typically considered to be located within nine coastal southern nigerian states, which include. Original paper exploration geology sedimentological and. Kurowska university of silesia department of fundamental geology sosnowiec poland abstract niger delta sedimentary basin is a large arcuate delta of the destructive dominated wave type that has been explored for oil and gas and exploited since 1958. The niger delta system figure 1 is one of the worlds largest tertiary deltas and one of its most prolific hydrocarbon systems, containing an estimated 68 bboe and producing approximately 3 mmboe per day. The third cycle, from eocene to recent, marked the continuous growth of the main niger delta. Reservoir description and characterization of eni field offshore niger delta, southern nigeria. Reservoir description and characterization of eni field. The niger delta is situated on the gulf of guinea on the west coast of central africa figure 1. Tectonic setting of the niger delta course manual and. This has attracted many petroleum and petrochemical industries into the area resulting in ruralurban migration and a surge in the urban population.
Akata formation, agbada formation, and benin formation are the three formal lithostratigraphic units that constitute the basin s sedimentary fill. Mar, 2015 detailed studies on depositional sequence, genetic facies, and depositional environment were done using sequence stratigraphic tool in the paralic sequence of middle to late miocene age in the coastal swamp depobelt of the niger delta basin. The niger delta basin is situated on the continental margin of the gulf of guinea in equatorial west africa, covering about 75,000km228958mi2with average thickness of about 12km7mi knox and. The first began with a marine incursion in the middle cretaceous and was terminated by a mild folding phase in santonian time. This basin is very complex, and it carries high economic value as it.
Nigeria is underlain by seven major sedimenta ry basins, viz. Thermal maturity evaluation and prediction of petroleum generation. The major structural elements delimiting the niger delta basin into two segments are the benin hinge line bhl an extension of the. Hydrostratigraphy and hydraulic characterisation of. An estimate of oil window in nigeria niger delta basin from. Structural and seismic facies interpretation of fabi field.
These source rocks contain type ii and type iiiii kerogen with toc contents ranging from 2 to more than 5 wt%. The niger delta is framed on the northwest by a subsurface continuation of the west african shield, the benin flank. S1 abstract the niger delta, an area of roughly 30,000km2, is experiencing physical development challenges due to poor soil conditions, a situation which has escalated project cost and as a consequence impeded development. Geology and petroleum systems of the offshore benin basin. It is one of the most prolific hydrocarbon bearing deltas in the world. The area of the original deposition was from the northwestern extension of the niger delta westward to the keta basin haack et al. Palynostratigraphy, paleoclimate and paleoenvironment of a segment of gbo04 well, onshore western niger delta basin, nigeria ogbahon oa, foladara ao and enweliku ds. Niger has fossil fuels which includes deposits of petroleum and coal. During the tertiary it built out into the atlantic ocean at the mouth of the niger benue river system, an area of catchment that encompasses more than a million square kilometers of predominantly savannahcovered lowlands.
Approximately onetenth of the chad basin is situated in nigeria. Kurowska university of silesia department of fundamental geology sosnowiec poland abstract niger delta sedimentary basin is a large arcuate delta of the destructive. These differences are thought to be related to geothermal gradients, environments of deposition, source materials, pore. The niger delta is situated on the gulf of guinea on the west coast of central africa. The geology of nigeria is made up of three major lithopetrological components, namely, the basement complex. Benue trough is a nesw folded rift basin that runs diagonally across nigeria. N department of earth sciences, federal university of petroleum resources, effurun, nigeria abstract palynological biostratigraphic studies were carried out on ditch cutting samples obtained from wells l1 and. Deltaic sedimentary environments in the niger delta. Mineral studies of the subsurface niger delta odigi.
Pdf an overview of the geology and hydrogeology of nigeria. The tectonic evolution of benue trough and niger delta are well documented in niger delta geologic literatures e. Reservoir geology and sequence stratigraphy of deep water sediments, offshore depobelt, niger delta, nigeria matthew o. Lithologies of cretaceous rocks deposited in what is now the niger delta basin can only be extrapolated from the exposed cretaceous section in the next. In the niger delta basin, quaternary age sediments underlying the delta plain consist. Niger delta basin geology is part of wikiproject geology, an attempt at creating a standardized, informative, comprehensive and easytouse geology resource. Stratigraphy and sedimentology of the niger delta in. Department of geology, university of port harcourt, nigeria abstract.
The sediments of the akata formation were deposited in shelf to bathyal environments. While the direction and magnitude of the hydrologic regime in the upper and middle niger basin remain highly uncertain, there is greater certainty. Petrophysical evaluation and volumetric estimation within. The niger delta in nigeria is the economic hub of the country due to crude oil exploration around the basin.
Geological evaluation of hydrocarbon prospect of fobfield. Depobelt and structural play map of the niger delta basin showing the study area. The tertiary niger delta basin has been studied by several workersofsedimentology,sequencestratigraphyandgeo. If you would like to participate, you can choose to edit this article, or visit the project page for more information. Odeyemi intermediate rocks from older granite complexes.
Engineering geology of the niger delta 67 sediments originating from the vast catchment area and geologic ally com plex hinterland fig. The bida basin, also known as the mid niger or nupe basin, is located in westcentral nigeria figure. Geology and mineral resources of the lower benue trough, nigeria. The predrift fit of south america into the gulf of guinea is well known1. Udoh 1,2department of geology, university of port harcourt, port harcourt, nigeria. Geological section through the sedimentary layers of the niger deltas mouth 9. The upper floodplain of the niger river starts from onitsha its apex, as shown in fig. The second included the growth of a proto niger delta during the late cretaceous and ended in a major paleocene marine transgression. Modeling hydrocarbon generation potentials of eocene source. Sedimentology and ichnology of neogene coastal swamp deposits in the niger delta basin 193 ognised, each with its own sedimentary, deforma tional and petroleum history michele et. Nwajide 6 clearly demarcates the anambra basin from the niger delta. The basin s basal formation is the akata formation. Some of the other natural resources are gypsum, salt and phosphates.
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