Akosua perbi fulbrightscholarinresidence manchester college indiana, u. Apr 30, 2009 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. Aqueduct metadata document mekong river basin study pdf. Dahomey basin, provenance, heavy minerals, and mineralogical composition. Aquifer vulnerability assessment of the dahomey basin using. Feb 23, 20 chemistry and materials research issn 2224 3224 print issn 2225 0956 online vol 2, no. Seismic stratigraphy and development of avon canyon in. Dahomey benin basin, within longitudes 3045e and 5045e and latitudes 6000n and 7000n. Micropaleotological studies of ewekoro sediments southwestern.
This basin is bounded by okitipupa ridge, which is the boundary it shares with niger delta basin 23. Depositional facies and sequence stratigraphic study in. A mobility impaired hunter is defined as a person 1 permanently confined to a wheelchair, crutches, or a walker or 2 a single or doubleleg amputee. The inconsistency is attributable to the little or no. Petsanimals dogs are allowed for hunting migratory birds, squirrels. The continental sediments of the nigerian coastal basins. The groundwater occurrence, movement and accumulation are chiefly controlled by geology. 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. Nigeria dahomey basin opl 325 lekoils regional basin study covering the dahomey basin. Introduction a proper understanding of modern sedimentary environment is based mainly on three parameters which are their physical, chemical and biological characteristics. These could be related to a number of features in the study area including its. Dahomey developed on the abomey plateau amongst the fon people in the early 17th.
Electrical resistivity imaging eri of basin fills in. The assessment of potential source rocks of maastrichtian araromi. Kg basin is a polycyclic pericratonic passive margin rift basin located on the east coast of india and extends both onland and offshore. Interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. The studied xformation is one of the paleocene strata bearing marine macrofossils.
The belt is about 120km long and spans from lagos state to siluko in edo state and akotogbo in ondo state adegoke et al. It is a transboundary basin that extends from ghana through togo and benin to nigeria. Challenges in the tapi basin free download as powerpoint presentation. Oshin department of geology, obafemi awolowo university, ileife, nigeria centre for energy, research and development, obafemi awolowo university, ile. Potential gradients are measured for a particular earth. Please contact the complex headquarters for more information. Ijerph free fulltext regional aquifer vulnerability. The identified formations earth layers are as presented in table 1. Drilled core samples of the araromi formation in the eastern dahomey basin penetrated by araromi and gbekebo exploratory wells were investigated to establish the source rocks potentials in the onshore area of the basin.
It extends from the volta delta in ghana in the west to the okitipupa ridge in nigeria in the east whiteman. Department of geology, federal university of technology, minna, nigeria. Geology and petroleum systems of the offshore benin basin. A background data and proposed rural development projects in upper volta. Groundwater prospecting using electrical resistivity new. The senegal river basin covers a surface area of about 300,000 km2.
Geological survey openfile report 96108 prepared in cooperation with the bureau of reclamation bismarck, north dakota 1996. Jun 15, 2016 interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. Use of remote sensing and geographic information system. Geography the nigercrosses areas with different climatic. Agbadamashi2 and chukwudi ugbome2 1department of geology, college of physical and applied sciences, michael okpara university of agriculture, umudike, p. Low vulnerability areas of the basin are characterised by thick vadose zones, low precipitation, compacted soils, high slopes, and high depth to groundwater. The tar sand belt of southwestern nigeria falls within the eastern dahomey benin basin which straddles the basementsediment contact figure 1. Hydrocarbon potential assessment of the maastrichtian araromi shales in the dahomey basin, southwestern nigeria. The sediments are of maastrichtian age deposited in the shallow marine environment with varying thicknesses.
Statistical and descriptive summaries of waterresources data for the cannonball river basin, north dakota and south dakota by edwin a. Nigeria is a vast country with considerable wealth in natural resources and understanding nigerias geology is critical for efficient exploration and exploitation of. Request pdf the dahomey basin the dahomey basin is a combination of inland coastal. The study region is generally a gently sloping lowlying area.
The onland part covers an area of app 28,000 sq km and the offshore part including deep waters covers an area of about 1,45,000 square km. Regional geologic setting and stratigraphy the benin dahomey basin constituting part of a system of west african pericratonic margin sag basin. Hydrostratigraphic characterisation of shallow coastal. This group is the thickest sedimentary unit within the basin. A faulted basement high, the okitipupa basement ridge separated the dahomey embayment from the benue trough until the late cretaceous subsidence and marine transgression united both basins. Based mainly on available lithological, biostratigraphic and paleoenvironmental data, this paper summarizes the stratigraphic. Subsidence patterns in the nigerian sector of benin dahomey basin. Geothermal gradient of niger delta from recent studies.
Dahomey basin sw nigeria scientific research publishing. The high plateau in northern guinea covers 31,000 km 2 11 percent of the basin, 155,000 km2are situated in western mali 53 percent of the basin, 75,500 km2 are in southern mauritania 26 percent of the basin and 27,500 km2 are in northern senegal 10 percent of the basin. They are a combination of both parallic and marine sediments underlain by undifferentiated crystalline basement usually metamorphosed. This is an arcuate coastal basin, the onshore parts of which underlie the coastal plains of southwest nigeria, benin and togo. The subsidence can result from a variety of causes that include. Hydrocarbon geochemical characteristics and depositional environment of tertiary tar sand from ondo, sw nigeria. Introduction slavery and the slave trade have been age old institutions and practices in almost every continent in the world. Pdf palynology of the cretaceous succession of sile well. Prerift stage up to late jurassic the prerift rocks in the dahomey embayment are represented by the lower part of the ise formation kogbe and mehes, 1986. Basement exploration in kg basin the untouched frontier. Quaternary sediments of the lagos coastal lagoon in nigeria lie within the dahomey basin, located in the southwestern part of the country adegoke, 1969. Aspects of source rock evaluation and diagenetic history. To the west are plains and uplands of the benin basin.
Pdf geology and petroleum systems of the offshore benin. Dahomey basin in relation to other basins modified after 3. The method is applied on a shallow aquifer in the dahomey basin of southwestern nigeria with the results being compared to other established vulnerability assessment methods. It is separated from the niger delta by a subsurface basement high referred to as the okitipupa ridge. In the study, geological information of the sediments such as.
Pdf the dahomey basin is an amalgamation of inlandcoastaloffshore basin. It falls within the eastern dahomey or benin basin of southwestern nigeria which stretches along the continental margin of the gulf of guinea. The depositional environments and provenance characteristics. The pacific ocean is the largest and deepest of earths oceanic divisions. The avon canyon identified by burke 1972 falls within the present study area, which is about 82 km and 94 km from lagos and okitipupa, respectively. Widespread warming before and elevated barium burial during. Hydrocarbon geochemical characteristics and depositional. The typical inletoutlet openings in a filter basin are four inches and pipe gaskets will require a fiveinch hole to be drilled on both the inlet side and outlet side with a twoinch drop. However, inconsistency in estimates of volumes of hydrocarbon contained in these deposits has inhibited commercial interest in the deposits. Deposits of heavy oil and natural bitumen have been longdiscovered in the dahomey basin southwestern nigeria. 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. New perspectives new plays in the douala basin of cameroon. Nigeria is underlain by seven major sedimenta ry basins, viz.
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 if you would like more information about how to print, save, and work with pdfs, highwire press provides a helpful frequently asked questions about pdfs alternatively, you can download the pdf file directly to your computer. Easily share your publications and get them in front of issuus. The dahomey basin the dahomey basin is a combination of inlandcoastaloffshore basin that stretches from southeastern ghana through togo and the republic of benin to southwestern nigeria. Palynology and paleoenvironments of the upper araromi formation, dahomey basin, nigeria.
Sedimentary exposures at ijebu omu, itele and ijebu ife, all within the eastern part of dahomey basin, southwest nigeria were imaged using electrical geophysical method with the aim of reconstructing the geological history of the area and providing a basis for. Petrography and geochemical indices of the lagos lagoon. The main bitumen belt in nigeria occurs on the eastern margin of a coastal sedimentary basin known. 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. The characteristic feature of his basin is the presence of. Akande 2 1 university of ilorin, 240093, ilorin, nigeria 2 university of ilorin, ilorin, nigeria dahomey basin is an extensive sedimentary basin in the gulf of guinea. The colorado river basin study was released in december 2012. Palynological characterization of the tertiary offshore. This study employed electrical resistivity tomography ert in characterising the shallow groundwater aquifers of eastern dahomey basin in southwestern nigeria to assess the possible occurrence and distribution of saltwater within the aquifers. Of the dahomey basin, 21% was classified as highvulnerability and at risk of pollution, 61% as moderate vulnerability, and 18% as low vulnerability. The basin is a marginal pullapart basin klemme, 1975 which developed in the.
The boreholes were drilled in the central part of the xformation, dahomey basin and was drilled up to the depth of 70ft. Ijerph free fulltext regional aquifer vulnerability and. Omatsola and adegoke 1981 on the lithostratigraphy of dahomey basin recognized 3 formations belonging to the abeokuta group based on lithologic homogeneity and similarity of origin. Challenges in the tapi basin flood water resources. Seismic stratigraphic analysis was carried out to evaluate the canyon morphology, origin and evolution. It extends from the arctic ocean in the north to the southern ocean or, depending on definition, to antarctica in the south and is bounded by the continents of asia and australia in the west and the americas in the east. The slides, residues, unprocessed samples, cd copies and duplicate prints are in the palynological collections of the biological sciences department. Hydrocarbon potential assessment of the maastrichtian araromi. Characterization of a bitumen seepage in eastern dahomey. Pelagia research library advances in applied science research, 20, 46. Feb 23, 20 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Nigeria dahomey basin opl 310 lekoil commissioned a regional basin study and identified the dahomey basin block opl 310 as a key target.
Palynology and paleoenvironments of the upper araromi. For dinoflagellates and acritarchs, monographs of powell 1992, jan du chene 1987 and sluijs et al. Dahomey basin was undertaken from emi 1 well located in. In geologic terms, the tarbelt straddles the ilesha spur or okitipupa high, a structural and slight topographic divide. The promise of deepwater dahomey basin africas premier. Rockeval data of forty seven 40 shales give total organic carbon. Cie warming has been observed at two sites along the new jersey shelf, bass river and wilson lake sluijs et al. The view that anambra basin lithostratigraphic names should not be used in. Electrical resistivity tomography ert, induced polarization ip and borehole logging were carried in locations with relatively enhanced electrical. Generally, species nomenclature for dinoflagellate cysts followed fensome and williams 2004.
The paleoceneearly eocene foraminiferal biostratigraphy. Geological map of dahomey basin in the nigerian sector and the states located on the basin 3. The main rivers in the north of benin are tributaries of the niger river, and flow northwards, out of the country. Find, read and cite all the research you need on researchgate. Onchocerciasis control in the volta river basin area. Bathymetrically, the study area covers the continental shelf up to the. Basin, lower benue trough and middle benue trough which are about 7 and 5 km of depth, upper benue trough only about 3 km to the crystalline rocks, nupe basin about 1. Dahomey basin also called benin or keta basin in nigerian literature. At odp site 690 in the southern ocean, surface warming also preceded the cie thomas et al. It extends from south eastern ghana through togo and benin republic into western nigeria slansky, 1962, antolini 1968, billman 1972.
Basin application guide to insure polylok basins are installed correctly the tank outlet height to grade has to be known. Electrical resistivity tomography ert, induced polarization ip and borehole logging were carried in locations with relatively. Radio frequency dielectric properties of limestone and. In the offshore benin basin drilling has dod2a seme 5 h2 h3 h4 h5 h7 h8 h9 mid. Presentation on challenges in the tapi basin with a focus on lower tapi basin. Palynology of the cretaceous succession of sile well, offshore dahomey basin, benin republic. 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.
Pdf aquifer vulnerability assessment of the dahomey basin. Nonmetallic mineral and industrial materials energy policy energy sources as industrial feed stock biomass energy bituminous sand coal and lignite propile of available energy resources domestic energy scene energy resources and energy policy dahomey basin the southern chad basin the benue trough the calabar flank sedimentary basins basement. Geology and mineral resources of nigeria springerlink. The method follows the source pathway receptor concept of aquifer vulnerability assessment where rainfall represents. Slavery and the slave trade in precolonial africa by dr. The dahomey basin is an extensive sedimentary basin on the continental margin of the gulf of guinea. The dahomey basin is a very extensive sedimentary basin that extends from southeastern ghana in the west. This paper presents the theory and application of rainfall and travel time rtt vulnerability method.
Biostratigraphic studies of x and x boreholes,xformation. The main perennial river in the south of benin is the oueme river, which, along with some other smaller rivers, drains into the network of lagoons which has developed along the coast there is no natural river discharge directly into the atlantic ocean. Electrical resistivity imaging eri of slope deposits and. The dahomey basin is an extensive sedimentary basin, in the gulf of. Electrical resistivity imaging eri of basin fills in some parts of eastern dahomey akinmosin a. The lagoon is about 50 km long, between 3 km and km wide, with a depth ranging from 3 m in most parts to 12 m. Geoinvestigation on groundwater control in some parts of. Sedimentary basins are regions of earth of longterm subsidence creating accommodation space for infilling by sediments. Outcrop analog are important tools for better understanding of large scale seismic features such as slope deposits and structures. 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.
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