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. Hydrocarbon geochemical characteristics and depositional environment of tertiary tar sand from ondo, sw nigeria. Stratigraphy of western nigeria offshore basin the stratigraphy of the eastern dahomey basin has been studied and discussed by various authors 1 11 14 20. The basin is a marginal pullapart basin klemme, 1975 which developed in the. B impact shock metamorphism producing planar deformation features qzpdf.
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. Pdf the cretaceous stratigraphy of the eastern dahomey embayment based on boreholes and. Akande 2 1 university of ilorin, 240093, ilorin, nigeria 2 university of ilorin, ilorin, nigeria. For dinoflagellates and acritarchs, monographs of powell 1992, jan du chene 1987 and sluijs et al. Pdf palynology of the cretaceous succession of sile well. 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. The slides, residues, unprocessed samples, cd copies and duplicate prints are in the palynological collections of the biological sciences department, redeemers university, mowe. Because oil and gas are less dense than the ground water density oil 0. 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. Detailed fieldwork in parts of the benin dahomey basin sw, nigeria has allowed the recognition of sedimentary successions deposited in different continental. Feb 23, 20 chemistry and materials research issn 2224 3224 print issn 2225 0956 online vol 2, no. Pdf depositional facies and sequence stratigraphic study in.
Origin and residence time of shallow groundwater resources. Ijerph free fulltext regional aquifer vulnerability and. 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. Regional map of four countries showing the location of the benin dahomey basin in the gulf of guinea modified from brownfield and chapentier, 2006. Dahomey embayment with indication of the study area. Hydrocarbon potential assessment of the maastrichtian araromi. Radiogenic heat production in the coastal plain sands of ipokia. Generally, species nomenclature for dinoflagellate cysts followed fensome and williams 2004.
Geochemistry of the paleocene limestones of ewekoro. 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. The area is characterized by moderate to low relief and the drainage is. This study employed electrical resistivity tomography ert in characterising the shallow groundwater aquifers of eastern dahomey basin in southwestern. Electrical resistivity tomography ert, induced polarization ip and borehole logging were carried in locations with relatively enhanced electrical. The application of onedimensional 1d backstripping analysis was used to determine subsidence patterns in three offshore wells ayetoro 1, baba 1 and epiya 1 located in the nigeria sector of benin dahomey basin. Geostatistical exploration of dataset assessing the heavy metal. Done at niamey, on 26 oc tober 1963 official texts. Jun 15, 2016 interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. The geology of the study area is that of eastern dahomey basin, a combination of. Nigeria is underlain by seven major sedimenta ry basins, viz. Once oil and gas enter the reservoir rock, they are relatively free to move. The kingdom of oyo, around 300 kilometers 190 miles inland, was the most successful of these kingdoms.
Ijerph free fulltext regional aquifer vulnerability. Geochemistry of the paleocene limestones of ewekoro formation. 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. Purchase practical petroleum geochemistry for exploration and production 1st edition. Sep 23, 2011 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. Subsidence patterns in the nigerian sector of benin dahomey. The boreholes were drilled in the central part of the xformation, dahomey basin and was drilled up to the depth of 70ft. The diameter and thickness of the samples were measured using.
The studied xformation is one of the paleocene strata bearing marine macrofossils. The dahomey basin is an extensive sedimentary basin on the continental margin of the gulf of guinea. Geosciences free fulltext hydrostratigraphic characterisation of. Hydrocarbon potential assessment of the maastrichtian araromi shales in the dahomey basin, southwestern nigeria. Geological survey usgs consists of the coastal and offshore areas of cote divoire, ghana, togo, and benin, and the western part of the coast of nigeria, from the liberian border east to the west edge of the niger delta. Interpretation of a grid of high resolution seismic profiles from the offshore eastern part of the benin dahomey basin in southwestern nigeria area permitted the identification of cyclic events of cut and fill associated with the avon canyon. 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. Pdf geology and total petroleum systems of the gulf of. Characterization of a bitumen seepage in eastern dahomey. The dahomey basin is an amalgamation of inlandcoastaloffshore basin that expanses from southeastern ghana through. 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. 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. Slavery and the kingdoms of oyo, dahomey and asante. The samples went through a drying process in bid to make it air free, it was grounded and sieved again.
Source to reservoir correlation and hydrocarbon compositions of oil sand deposits in dahomey basin, nigeria saeed mohammed1, opuwari momonitu1, salam titinchi1, mohammed b. Dahomey developed on the abomey plateau amongst the fon people in the early 17th century and became a. The recent classification schemes are shown in table 1. Source to reservoir correlation and hydrocarbon compositions. Saline ground water has a density of slightly more than 1. However, geology is fairly well defined in the republic of benin part of the basin billman 1976. Ifonyintedo, dahomey basin, radiogenic heat production, coastal plain sands. This paper presents the theory and application of rainfall and travel time rtt vulnerability method. Hydrocarbon potential assessment of the maastrichtian. Please contact the complex headquarters for more information. Good electromagnetic shielding was implemented to the whole sample holder in order to reduce noise problems that are common, especially at low frequencies. Religion, laws and language are specially dealt with in ewespeaking peoples of the slave coast, by a. Radio frequency dielectric properties of limestone and.
The women soldiers of dahomey elite troops of women soldiers, probably established in the early eighteenth century, contributed to the military power of the kingdom of dahomey in the eighteenth and nineteenth centuries. 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. Often recruited as teenagers, the women soldiers lived in the royal palace, isolated from society. 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 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 depositional environments and provenance characteristics. Outcrop analog are important tools for better understanding of large scale seismic features such as slope deposits and structures. The method follows the source pathway receptor concept of aquifer vulnerability assessment where rainfall represents. Most reservoir rocks are initially saturated with saline groundwater. Aquifer vulnerability assessment of the dahomey basin using.
Dahomeys women warriors history smithsonian magazine. Subsidence patterns in the nigerian sector of benin dahomey basin. With control over these key coastal cities, dahomey became a major center in. Subsidence patterns in the nigerian sector of benin. Chemistry and materials research issn 2224 3224 print issn 2225 0956 online vol 2, no. The promise of deepwater dahomey basin africas premier. It extends from south eastern ghana through togo and benin republic into western nigeria slansky, 1962, antolini 1968, billman 1972. The dahomey basin is a marginal pullapart klemm, 1975 or marginal sag basin kingston et al. The frontier cotonou basin or dahomeybenin embayment, situated west of.
Aquifer vulnerability assessment of the dahomey basin. The second francodahomean war, which raged from 1892 to 1894, was a major conflict between the french third republic, led by general alfredamedee dodds, and the kingdom of dahomey under king behanzin. The stratigraphy of the eastern dahomey basin has been studied and discussed by various authors 1 11 14 20. Practical petroleum geochemistry for exploration and. It is an extensive sedimentary basin in the gulf of guinea. A faulted basement high, the okitipupa basement ridge separated the dahomey embayment from the benue trough until the late cretaceous subsidence and.
The basin is a marginal pullapart basin klemme, 1975 which developed in. Palynology and paleoenvironments of the upper araromi. Agbadamashi2 and chukwudi ugbome2 1department of geology, college of physical and applied sciences, michael okpara university of agriculture, umudike, p. Still, we dont think the king of dahomey wouldve been invited to do a ted talk king dahomey on stage and security guard appears 02. Regional geologic setting and stratigraphy the benin dahomey basin constituting part of a system of west african pericratonic margin sag basin. Low vulnerability areas of the basin are characterised by thick vadose zones, low precipitation, compacted soils, high slopes, and high depth to groundwater. Easily identified by their solid yellow body and gray wings, this bird is a common sight at the refuge during the summer. The aims were to investigate the depositional settings and source of rare earth element ree. Biostratigraphic data obtained in the three wells indicated that the oldest sediment penetrated varied from cenomanian to campanian in age while the youngest. These cauldronfree areas offer the most favorable prospects for petroleum.
The frontier cotonou basin or dahomeybenin embayment, situated west of the. Palynology of the cretaceous succession of sile well, offshore dahomey basin, benin republic. The dahomey basin is a combination of inland coastal offshore basin that stretches from southeastern ghana through togo and the republic of benin to. Geochemical and organic petrological study of bituminous.
The study area is situated in the coastal strip of dahomey basin, western nigeria fig. The kingdoms of oyo, dahomey and asante from the 1640s, four inland states near the gulf of guinea were growing in wealth and power from the slave trade. However, the sedimentary successions in these basins are broadly divisible into. Next thing anybody knew, abomey was renamed the kingdom of dahomey. The province includes the ivory coast, tano, central, saltpond, keta, and benin basins and the dahomey embayment.
The french emerged triumphant and incorporated dahomey into their growing colonial territory of french west africa. It is separated from the niger delta by a subsurface basement high referred to as the okitipupa ridge. Ewekoro formation, rare earth elements, depositional condition, provenance, dahomey basin abstract thirty three limestone samples of the paleocene ewekoro formation from exploratory drill cores within ibeshe cement quarry, southwestern nigeria were investigated for major, trace and rare earth elements abundances using inductively. This is an arcuate coastal basin, the onshore parts of which underlie the coastal plains of southwest nigeria, benin and togo. Based mainly on available lithological, biostratigraphic and paleoenvironmental data, this paper summarizes the stratigraphic succession of theses basins and. Foraminiferal biostratigraphy and paleoenvironmental study of the maastrichtian to early eocene sediments of y well offshore benin, dahomey basin topics dahomey basin, early eocene, foraminifera biostratigraphy, maastrichtian, paleobathymetry, paleoenvironment, seme field. Benin, officially republic of benin, french republique du benin, formerly until 1975 dahomey or 197590 peoples republic of benin, country of western africa. Today, there are few reference books available on how petroleum geochemistry is applied in exploration and production written specifically for. The dahomey basin is a very extensive sedimentary basin. Hydrocarbon geochemical characteristics and depositional. The diameter and thickness of the samples were measured using an electronic digital calliper. Thirty three limestone samples of the paleocene ewekoro formation from exploratory drill cores within ibeshe cement quarry, southwestern nigeria were investigated for major, trace and rare earth elements abundances using inductively coupled plasma spectrometry icpms analytical method.
It extends from southeastern ghana keta basin in the west, through southern togo and the southern benin republic to thin out at okitipupa ridge in nigeria in the east billman, 1976. The history of the kingdom of dahomey spans 300 years from around 1600 until 1904 with the rise of the kingdom of dahomey as a major power on the atlantic coast of modernday benin until french conquest. The dahomey basin, sw nigeria, hosts a 3000mthick sedimentary succession of cretaceous and cenozoic age, of which the turonianmaastrichtian afowo formation includes sandstones, arkoses, shales, shelly limestones, unconsolidated sand, clay and most importantly, bituminous tar sand strata. The kingdom became a major regional power in the 1720s when it conquered the coastal kingdoms of allada and whydah.
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. This group is the thickest sedimentary unit within the basin. Seismic stratigraphic analysis was carried out to evaluate the canyon morphology, origin and evolution. The dahomey basin is a very extensive sedimentary basin that extends from southeastern ghana in the west. Interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. Geology of nigeria by kogbe pdf the gboko limestone, yandev, benue state, nigeria.
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