Nigeria is a vast country with considerable wealth in natural resources and understanding nigerias geology is critical for efficient exploration and exploitation of these resources. Introduction a proper understanding of modern sedimentary environment is based mainly on three parameters which are their physical, chemical and biological characteristics. Nigeria dahomey basin opl 325 lekoils regional basin study covering the dahomey basin. Onchocerciasis control in the volta river basin area. A faulted basement high, the okitipupa basement ridge separated the dahomey embayment from the benue trough until the late cretaceous subsidence and. Dahomey developed on the abomey plateau amongst the fon people in the early 17th century and became a regional power in the 18th century by conquering key cities on the atlantic coast. Dahomey benin basin, within longitudes 3045e and 5045e and latitudes 6000n and 7000n. The dahomey basin is an extensive sedimentary basin extending almost from. Basement exploration in kg basin the untouched frontier. Application of geophysical and geotechnical methods to site characterization for construction purposes at ikoyi, lagos, nigeria k. Today, there are few reference books available on how petroleum geochemistry is applied in exploration and production written specifically for. Geological map of dahomey basin in the nigerian sector and the states located on the basin 3. The dahomey basin is an upper cretaceous to pliocene sedimentary basin found on the continental margin of guinea coast of west africa. Nigeria is underlain by seven major sedimenta ry basins, viz.
Three major oceanic fracture zones, interpreted from new aeromagnetic data, intersect the dahomey basin and extend farther inland as. Aspects of source rock evaluation and diagenetic history of the akinbo shale eastern dahomey basin, southwestern nigeria nton, matthew e ezeh, francis p. Psgenerating value through new logging technology and analytical methods case study from offshore west africa irewole j. It extends from southwestern ghana in the west through the republic of togo and benin into the southwestern flank in nigeria niger delta, as far the okitipupa ridge. The attributes of each cordilleran sedimentary basin, at scales ranging from crustalscale basin structure, stratigraphic architecture, sedimentary facies, sediment provenance, fossils, and remnant paleomagnetic records, to rareearth signatures in single zircon crystals, all contain the key ingredients for solving these vexing questions.
The basin is a marginal pullapart basin initiated during. Geology and total petroleum systems of the gulf of guinea. The dahomey basin is a sedimentary basin that extends from southeastern ghana in the west to the western flank of niger delta in nigeria. While the analysis of the well data from the dahomey basin indicates a continuous deepwater. Dahomey fell within the french sphere of influence, and there was already a small french colony at portonovo when, in about 1889, female troops were involved in an incident that resulted in a. Printer homepage things that are your printer drivers software firmware updates, videos, bulletinsnotices, howto, troubleshooting, user guides, product information, more. Practical petroleum geochemistry for exploration and production provides readers with a single reference that addresses the principle concepts and applications of petroleum geochemistry used in finding, evaluating, and producing petroleum deposits.
Practical petroleum geochemistry for exploration and. The belt is about 120km long and spans from lagos state to siluko in edo state and akotogbo in ondo state adegoke et al. This basin is bounded by okitipupa ridge, which is the boundary it shares with niger delta basin 23. Basin fill reaches up to 8km compared with an average of 3. The study area falls within the eastern part of dahomey basin and it is situated between latitude n06 042 and 06045 and longitude e04 018 and 04021 in the southwestern part of nigeria fig. The benin dahomey basin is one of the sedimentary basins located in the gulf of guinea oil province and straddles through four major countries, namely, ghana, the republic of benin, the federal republic of nigeria and the republic of togo figure 1. Hydrostratigraphic characterisation of shallow coastal. Dahomey basin, provenance, heavy minerals, and mineralogical composition. Depositional facies and sequence stratigraphic study in. Aspects of source rock evaluation and diagenetic history. Generalized stratigraphic column showing age, lithology, and sequence of the formations and tectonic stage of basin development in the nigerian sector of the benin basin 3.
Electrical resistivity imaging eri of basin fills in. Dahomeys women warriors history smithsonian magazine. The dahomey benin embayment is part of a system of west african pericratonic margin sag basin 14, covering much of the continental margin of the gulf of guinea, extending from voltadelta in ghana on the west to the okitipupa ridge in nigeria on the east figure 1. The frontier cotonou basin or dahomey benin embayment, situated west of the prolific niger delta basin, appears from seismic, gravity, and aeromagnetic interpretation, as a series of grabens and troughs confined on the west and east by the romanche and the chain fracture zones, respectively. Geology and mineral resources of the lower benue trough, nigeria. The dahomey basin is a combination of inland coastal offshore basin that stretches from southeastern ghana through togo and the republic of benin to southwestern nigeria. The crustal separation, typically preceded by crustal thinning, was accompanied by an extended period of thermally induced basin subsidence through the middleupper cre. In the dahomey basin, western nigeria, tar sand occurs in alternation with sand, sand, shale, carbonate, silstone and clays in transgressive deposits of cretaceoustertiary age. How do i scan documents on my deskjet 3700 printer hp. Provenance, tectonic setting and sourcearea weathering of. Detailed fieldwork in parts of the benin dahomey basin sw, nigeria has allowed the recognition of sedimentary successions deposited in different continental.
As the imprints of at least two major tectonic events are. Department of applied geology, the federal university of technology, akure. The paleoceneearly eocene foraminiferal biostratigraphy. O and goodluck i 1 1department of geoscience, university of lagos, akoka 2department of earth sciences, olabisi onabanjo university, agoiwoye, nigeria.
Pdf palynology of the cretaceous succession of sile well. Abstract major oxide geochemical analysis was carried out on the coastal plain sediments in the dahomey basin, to infer their provenance, tectonic setting and sourcearea weathering. Pdf bitumen represents an alternative energy source. Adedoyin1 abstract an integrated geophysical and geotechnical survey was carried out in a proposed engineering site at ikoyi, lagos, nigeria. Large reserves of tar sands containing 40 bbl of heavy oil are reservoired in poorly sealed sandstones of the campanian maastrichtian araromi formation in the basin. Nigeria comprise the anambra and dahomey basins in the south, the lower, middle and upper benue trough, the chad bornu basin in the ne, the bida basin, and.
Petrography and geochemical appraisal of afowo sandstone facies, dahomey basin, southwestern nigeria ikhane p. Geophysical basin structure of the cotonou dahomeybenin. For much of the 18th and 19th centuries, the kingdom of dahomey was a key regional state, eventually ending tributary status to the oyo empire. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. Assessment of groundwater vulnerability to leachate. The benue trough is arbitrarily subdivided into three portions. Geology and mineral resources of nigeria springerlink. They are found in boreholes and as seepages in south western nigeria. Characterization of a bitumen seepage in eastern dahomey basin, sw, nigeria akinmosin a.
Palynology of the cretaceous succession of sile well, offshore dahomey basin, benin republic. Churchgate tower 1, 9th floor pc 30, churchgate street victoria island, lagos t. Geochemical evaluation of arimogijaokeluse limestones. The frontier cotonou basin or dahomeybenin embayment, situated west of the.
Regional geologic setting and stratigraphy the benin dahomey basin constituting part of a system of west african pericratonic margin sag basin. It is separated from the niger delta by a subsurface basement high referred to as the okitipupa ridge. Use of remote sensing and geographic information system in. Cenomanian to coniacian sealevel changes in the lower benue.
The dahomey basin is a combination of inlandcoastaloffshore basin that stretches from southeastern ghana through togo and the republic of benin to southwestern nigeria. Adeniran ao 2015 principal component and cluster analyses of palynodebris from ajx well, offshore dahomey basin and their environmental significance. Dahomey basin ranges from continental to oceanic crust. The coastal plain and alluvium deposits of the eastern dahomey basin are characterised by a multilayer aquifer, which is classified into three types 16. Department of geology, federal university of technology, minna, nigeria.
Dahomey basin also called benin or keta basin in nigerian literature. The geological map of the basin is presented in figure 2, showing the distribution of rock units within the basin. This is an arcuate coastal basin, the onshore parts of which underlie the coastal plains of southwest nigeria, benin and togo. The depletion of highly mobile k and ca elements is due to leaching during the formation of clay minerals during increased chemical weathering. Abstract the akinbo formation comprises a sequence of mostly. The fault generation could not be established due to lack of overprinting relationship. It is bounded in the west by the ghana ridge, which is an extension of the romanche fracture zone. These could be related to a number of features in the study area including its. Dahomey basin in the gulf of guinea modified from brownfield and chapentier, 2006. The study area belongs to the cretaceous abeokuta group. Sedimentary basin an overview sciencedirect topics. Provenance, tectonic setting and sourcearea weathering of the. Tectonic evolution and hydrocarbon prospectivity of nigerian.
Geology and total petroleum systems of the gulf of guinea province of west africa by michael e. Omatsola and adegoke 1981 recognized three 3 formations in the abeokuta group based on lithologic homogeneity and. Hydrocarbon geochemical characteristics and depositional. A background data and proposed rural development projects in upper volta. Geology and mineral resources of the lower benue trough. The thickness of tar sand seams drilled during the study varies between 10 and 15 m and it even exposed to the surface. Heavy minerals and mineralogical composition of subsurface. The main bitumen belt in nigeria occurs on the eastern margin of a coastal sedimentary basin known.
Application of geophysical and geotechnical methods to. Pdf depositional facies and sequence stratigraphic study in. The benin and western nigeria offshore basins, which are parts of an extensive basin called the dahomey benin embayment, were formed during the early cretaceous under similar tectonic conditions and continental sedimentary environments. Interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. Characterization of a bitumen seepage in eastern dahomey. Reference and resources places to find help and learn about your printer. Generating value through new logging technology and. The studied xformation is one of the paleocene strata bearing marine macrofossils. The boreholes were drilled in the central part of the xformation, dahomey basin and was drilled up to the depth of 70ft. The result was a significant discovery in the ogo prospect. The dahomey basin is a very extensive sedimentary basin. It is a transboundary basin that extends from ghana through togo and benin to nigeria.
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