The recent classification schemes are shown in table 1. Cretaceous and tertiary of the iullemmeden basin in nigeria west africa. Geophysical and geological evidence for the benuechad basin cretaceous rift valley system and its tectonic implications c. Characterization of a bitumen seepage in eastern dahomey. Sedimentological interpretation of coastal ditch cuttings. Sedimentary succes sions in these basins are of middle mesozoic to recent age. The benin basin is a sedimentary basin that was initiated during the mesozoic in response to the separation of the africansouth american plates and the subsequent opening of the atlantic. Report on the galisteo basin new mexico department of. This is an arcuate coastal basin, the onshore parts of which underlie the coastal plains of southwest nigeria, benin and togo. Rio muni basin cabo san juan arch annoboncameroon volcanic axis kinshasa bangui central african republic niger delta w a l vis ridge angola cabinda namibe basin geology and total petroleum systems of the westcentral coastal province 7203, west africa u. Kogbe department of geology, ahmadu bello university, zaria, nigeria received 2 february 1980 and in revised form march and may 1980 c. A geological map, b ew geological section, extent and sediment thickness variations in the onshore and the upper part of the nigerdelta section of dahomey basin. In the ogaden basin of ethiopia and somalia, evaporitic conditions led to deposition of the korahe. Geology and total petroleum systems of the gulf of guinea.
Lekoil commissioned a regional basin study and identified the dahomey basin block opl 310 as a key target. An indication of oil seep from wereilu locality in the northeastern margin of the basin makes the abay basin one of the promising areas to undertake petroleum exploration. The sokoto basin nigerian sector of the iullemmeden basin. Geology, lithospheric structure and tectonics of the basin are only partially known. The romanche transform fault and chain fractures zones.
Geophysical and geological evidence for the benuechad basin. Cross section of northern part of niger basin 19 9. The promise of deepwater dahomey basin africas premier. Thermal constraints on the formation of mississippi valleytype leadzinc deposits and their implications for episodic basin dewatering and deposit genesis. The objective of this study is to determine the basem ent depth, establish the base. Pdf seismic stratigraphy and development of avon canyon. It is an extensive sedimentary basin in the gulf of guinea. American association of petroleum geologists, 3 dvds. 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. Biostratigraphic studies of x and x boreholes,xformation. However, these inland basins have continued to frustrate the efforts of many explorers, principally because of the poor knowledge of their geology and. Abstract the foraminiferal biostratigraphy of the paleocene early eocene strata of sw nigeria which represents the eastern dahomey basin has been studied from four boreholes and two outcrops. Cretaceous research 1981 2, 129186 cretaceous and tertiary of the lullemmeden basin in nigeria west africat c. Easily share your publications and get them in front of issuus.
Part 1 discusses the geology of the crystalline rocks and their regional distribution while the sedimentary basins constitute the subject of part 2. Geological map of dahomey basin showing the location of the araromi and gbekebo wells red box on the eastern margin of dahomey west of the niger delta. B impact shock metamorphism producing planar deformation features qzpdf. The saltpond basin is a paleozoic wrench modified pullapart basin centrally located between the tanocape three points and accraketa basins. Petrography and geochemical appraisal of afowo sandstone facies, dahomey basin, southwestern nigeria ikhane p. Evidence from field relationship and sedimentological study adeigbe, o. Geology of santa maria basin the santa maria geologic basin was formed by rightlateral, strikeslip faulting and concurrent deposition of marine sediments in a subsiding fault bounded block during a period of several million years in middle of the tertiary period of geologic time. Part 3 presents the mineral resources of nigeria, their geological environment, mode of occurrence, localities and where possible their estimated reserves. 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. Combining aquifer geometry and heatflow maps, a selected group of.
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. Characterization of the upper cretaceous sediments in the. Based mainly on available lithological, biostratigraphic and paleoenvironmental data, this paper summarizes the stratigraphic. One hundred twentysix ditch cuttings were retrieved from four boreholes drilled along the coastalnearcoast area of the basin. 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. Geological map of dahomey basin in the nigerian sector and the states. 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. Structural characterization of the nigerian sector of benin. It extends from south eastern ghana through togo and benin republic into western nigeria slansky, 1962, antolini 1968, billman 1972. Cretaceous and tertiary of the iullemmeden basin in. The paleocene early eocene foraminiferal biostratigraphy. The geology of benin in west africa includes the northnortheast trending proterozoic dahomeyide orogen in the north and a range of cretaceous to holocene sedimentary rocks in the south, separated very closely by the 7th latitude 42 neogene alluvial deposits extend across benins northeastern border with niger. The iullemmeden basin in northwestern nigeria is known locally as the sokoto basin. Radiogenic heat production in the coastal plain sands of ipokia.
Feb 23, 20 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Pdf geology and petroleum systems of the offshore benin basin. Location of the black warrior basin province in northwestern alabama and northeastern mississippi, published in the usgs report entitled, geologic assessment of undiscovered oil and gas resources of the black warrior basin province of alabama and mississippi. General geological framework of dahomey basin after 3 2. It extends northwestward into the niger valley, northward to the jos massif and northeastward into lafia. Dahomey developed on the abomey plateau amongst the fon people in the early 17th. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. The oldest unit in dahomey basin is abeokuta group 6 which lies unconformably on the crystalline basement complex of south western nigeria. The result was a significant discovery in the ogo prospect.
Iountains, the san fernando valley, the southern foothills of the san gabriell\1ountains. The geology of the basin has been extensively discussed by various authors murat, 1970. Generalized geology of the dahomey basin modified by billman, 1976 the abeokuta formation is the oldest formation in the dahomey basin. Hydrocarbon potential assessment of the maastrichtian araromi. Pdf estimation of the depth to magnetic basement in part of. Map of the drainage pattern and the sampling points. This group is the thickest sedimentary unit within the basin. Regional map of four countries showing the location of the benin dahomey basin in the gulf of guinea modified from brownfield and chapentier, 2006.
Petrography and geochemical indices of the lagos lagoon. Petrological and geochemical evaluation of the paleocene. Adeniran ao 2015 principal component and cluster analyses of palynodebris from ajx well, offshore dahomey basin and their environmental significance. The basin is a marginal pullapart basin klemme, 1975 which developed in the. The paleocene early eocene foraminiferal biostratigraphy of eastern dahomey basin, sw nigeria okosun, e. The mineral resources so far reported in the trough by the geological survey of nigeria agency are discussed below. Most of the wells that penetrated the basement are in the eastern dahomey embayment of western nigeria. Department of geology, federal university of technology, minna, nigeria. It is subdivided into three formations, namely, from the oldest to the youngest. Geological maps of a nigeria b dahomey benin basin revealing the study area. Geological map of dahomey basin in the nigerian sector and the states located on. The depositional environments and provenance characteristics.
Nigeria comprise the anambra basin, the dahomey basin, the lower, middle and upper benue trough, the chad basin, the bida basin, and the sokoto basin. Convergent boundaries create foreland basins through tectonic compression of oceanic and continental crust during lithospheric flexure. It is part of a system of west african margin basins developed during the period of the rifting associated with the separation of south american and african plates and subsequent. B 5363, ado, ekiti state, nigeria the cretaceous sediments of dahomey basin are partly cut off from the sediment of niger delta basin again supported ages assigned. Geology of the continental margin beneath santa monica bay, southern california, from seismicre.
Geology and stratigraphy of dahomey basin dahomey basin is an extensive coastal sedimentary basin on the margin of gulf of guinea. 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. Biostratigraphic studies of x 1 and x 2 boreholes,xformation, dahomey basin nigeria. Geology and mineral resources of nigeria springerlink. The geology of benin in west africa includes the northnortheast trending proterozoic dahomeyide orogen in the north and a range of cretaceous to holocene sedimentary rocks in the south, separated very closely by the 7th latitude.
The studied xformation is one of the paleocene strata bearing marine macrofossils. All these tributaries and their lower order streams start from the foot of the western ghats. Electrical resistivity imaging eri of slope deposits and. The dahomey basin is a very extensive sedimentary basin that extends from southeastern ghana in the west to the western flank of niger delta in nigeria. Thermal constraints on the formation of mississippi valley. These, and others, can be accessed through the africa groundwater literature archive. 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. Paleoceneeocene lithofacies in dahomey embayment, southwestern nigeria. Pdf estimation of the depth to magnetic basement in part. Groundwater potential assessment in a sedimentary terrain. Geology of the continental margin beneath santa monica bay. Geology and mineral resources of the lower benue trough.
Pectographic study of carbonate sediments around yewa river. In the togo and benin regions, the following rock types. In the blue nile basin of northwestern ethiopia, however, there are siliciclastic limestones and shaly sandstones, deposited undifferentiated from supratidal environments into a meandering river system. Assessment of coal geology, resources, and reserves in the southwestern. Discoveries in the ogaden basin indicated the gascondensate fields of calub and hilal, with estimated reserves of 2. The geology of the western railway w russ agrogeological studies of limestone, phosphate and gypsum occurrences in the dahomey basin, southwestern nigeria in. Geological map of dahomey basin in the nigerian sector and the states located on the basin 3. Geological map of dahomey basin in the nigerian sector and the states located on the basin modified after 1. Abstract the detail mapping and logging of the ibese area within the dahomey basin has revealed the total thickness of the limestone to range between 12. The dahomey basin is a combination of inland, coastal, and offshore basin that stretches from southeastern ghana through togo and the republic of benin to southwestern nigeria. Micropaleotological studies of ewekoro sediments southwestern nigeria oladosu yc and ogundipe oy department of geology, ekiti state university, p. Louis centre geologique et geophysique, universite des sciences, 34060 montpellier, france and d. Cratchley institute of geological sciences, exhibition road, south kensington, london sw7, 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.
Studies of geology and hydrology in the basin and range province, southwestern united states, for isolation of highlevel radioactive waste basis of characterization and evaluation. Palynology and paleoenvironments of the upper araromi. On river noyyal along its course a number of anaicuts are present. The paleoceneearly eocene foraminiferal biostratigraphy. Nigeria is underlain by seven major sedimenta ry basins, viz. Department of geology, university of ibadan, ibadan, nigeria. It consists predominantly of a gently undulating plain with an average elevation varying from 250 to 400 m above sealevel. Media in category basins of the united states the following 200 files are in this category, out of 322 total. Dahomey basin, southwestern nigeria using 2d spectral analysis. 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.
The boreholes were drilled in the central part of the xformation, dahomey basin and was drilled up to the depth of 70ft. Outcrop analog are important tools for better understanding of large scale seismic features such as slope deposits and structures. Sedimentary basins form primarily in convergent, divergent and transform settings. Cardott oklahoma geological survey aapg datapages, 2014, oklahoma city geological society publications on dvd, 195020. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. The following references provide more information on the geology and hydrogeology of benin. A geological traverse covering the entire basin was undertaken by the authors, paying. Recently proposed plans for oil and gas drilling in the galisteo basin sparked concerns about the impacts that such activities could have on the basins unique resources. 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.
Its regional extent covers southwest nigeria, benin, togo and ghana. Basement geology in the sedimentary basins of nigeria. The basin is bounded to the south by the niger delta basin hinge line. Regional geologic setting and stratigraphy the benin dahomey basin constituting part of a system of west african pericratonic margin sag basin.
The assessment of potential source rocks of maastrichtian. Pdf seismic stratigraphy and development of avon canyon in. Petrographic studies and paleoenvironmental reconstruction. The geology of nigeria as described by obaje 1, comprises of three litho petrological. The frontier cotonou basin or dahomeybenin embayment, situated west of the. Depositional facies and sequence stratigraphic study in. This plain is occasionally interrupted by low mesas. Jun 15, 2016 interest in deepwater dahomey basin in nigeria has suffered majorly from four handicaps. Hydrocarbon potential assessment of the maastrichtian araromi shales in the dahomey basin, southwestern nigeria. A faulted basement high, the okitipupa basement ridge separated the dahomey embayment from the benue trough until the late. Geology and stratigraphy the dahomey basin is an extensive sedimentary basin on the continental margin of the gulf of guinea.
Origin and residence time of shallow groundwater resources. Dinoflagellate cyst biozonation of upper cretaceous succession of mbeji1 well, central chad basin, north east nigeria yikarebogha y, oloto, i. The petroleum geology and prospectivity of the neo. The basin is a rift margin basin formed during the continental split between west africa gondwanaland and the south american land mass. U department of earth sciences, olabisi onabanjo university, agoiwoye department of geology university of ibadan email of corresponding author. Subsidence patterns in the nigerian sector of benin dahomey basin. Palynology and paleoenvironments of the upper araromi formation, dahomey basin, nigeria. The basement rocks are also exposed in the north central, southwestern and eastern. Anambra basin in the lower benue trough is a major coal producing basin in nigeria where intensive exploration and exploitation activities have been on since 1916 owing to the discovery of commercial coal in udi.
The galisteo basin contains some of new mexicos most unique and irreplaceable archaeological, cultural, water and other natural resources. Tectonics of the new guinea region university of vermont. Studies of geology and hydrology in the basin and range. The anambra basin is a structural depression located southwest of the benue trough and the immediate precursor to the niger delta. The two valleys in canyon iv have almost merged completely causing width. The localization of the backarc and backtransform extensional setting in the basin and range would have caused the crust to thin constenius, 1996 from about 60 km, postlaramide orogeny, to about 30 km, in the current basin and range coney and harms, 1984. Geology and total petroleum systems of the westcentral. October 2017 bibliography of oklahoma anadarko basin brian j.
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 dahomey basin is a continental margin basin situated on the northern margin of the gulf of guinea coast. Geologic sections across the onshore senegal mauritania. The topography of ifonyintedo is majorly characterized by. The dahomey basin is a very extensive sedimentary basin that extends from southeastern ghana in the west. Geological and hydrogeological setting the study area is situated in the coastal strip of dahomey basin, western nigeria fig. Nigerias frontier basinsunrealized rift system hydrocarbon. Location of dahomey basin in the gulf of guinea area of west africa, b. Fonds documentaire geologic sections across the onshore senegal mauritania basin derived from geoelectric studies m. Sediments in the basin were deposited in nonmarine to coastal marine environments, and range in age from ordovician to cretaceous. The basin is exposed over a roughly triangular territory, estimated at some 95,000 km2 1 and separated from the dahomey basin by a basement highthe okitipupa ridge and the.
Dahomey basin sw nigeria scientific research publishing. Pdf phosphorite and gypsum occurrence in the upper. Other subsequent workers recognized three chronostratigraphic units. Coastal plain sands in some selected areas of ikoyi, in lagos, dahomey basin southwestern nigeria have been investigated with respect to their geotechnical properties to determine their suitability as construction materials and to recommend suitable. Dahomey embayment with indication of the study area. Pdf geology and petroleum systems of the offshore benin. This research characterized subsurface geology and provenance of coastal sediments in some parts of the eastern dahomey basin, southwestern nigeria.
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