A faulted basement high, the okitipupa basement ridge separated the dahomey embayment from the benue trough until the late cretaceous subsidence and. Sedimentary basins range in size from as small as hundreds of meters to large parts of ocean basins. Pdf distribution of sedimentary formations in the bornu. Formation evaluation of an onshore oil field, niger delta nigeria. Odumodu cfr, mode aw 2017 trace fossils from the campanian maastrichtian enugu formation of the anambra basin, southeastern nigeria. Sedimentary basins and petroleum geology of the middle. Department of geology, university of nigeria, nsukka, nigeria 2department of physics, university of port harcourt, port harcourt, nigeria abstract data from sixteen deep wells drilled for oil exploration purposes in the anambra basin of southeastern nigeria indicate large variations in temperature gradients and heat flow within the basin. Physiographically, the anambra basin can be subdivided into three main subbasins ladipo, 1986.
The basin is structurally linked to the north with the termit basin with which. Sedimentology and sequence stratigraphy of the nkporo. The mineral resources so far reported in the trough by the geological survey of nigeria agency are discussed below. A snapshot of the geotectonics and petroleum geology of. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. Basement geology in the sedimentary basins of nigeria. The geotechnical properties of clay occurrences around. Sedimentary basins and petroleum geology pdf download, jamie oliver goli kuhar pdf download 1cc1596b1f sedimentary basins ofindia search results read books online free. Contains details on the geological units of nigeria and the associated mineral resources. The presence of libycoceras dandense howarth in marine facies of the nkporo shale about 35 m below the nkporomamu contact in the lokpaukwuleru section demonstrates that in this area the. Regional geology of nigeria geology, nigeria the mapped area falls within the benue trough the oldest sedimentary rocks in nigeria is in this trough and they are of lower cretaceous age. The plotting of the density and neutron logs on the same track was used for differentiating the hydrocarbon type in the reservoirs. 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 zone. This overview of the petroleum geology of rift basins in niger, chad, and central african republic car is based on exploration work by exxon and partners in the years 19691991.
Subsurface evaluation of source rock and hydrocarbon. The northwest southeastern trending bida basin forms one of the major inland sedimentary basins in nigeria. This is an arcuate coastal basin, the onshore parts of which underlie the coastal plains of southwest nigeria, benin and togo. An assessment of the geotechnical aspects of njaba river sediments in the eastern niger delta basin, southeastern nigeria c. Geotechnical assessment of gully erosion at ankpa area. Kutigi is the major town in the area, while the surrounding villages include. Oshin department of geology, obafemi awolowo university, ileife, nigeria centre for energy, research and development, obafemi awolowo university, ile. The frontier basins in nigeria are found within the precambrian basement complex of southwestern nigeria. Some geotechnical characteristics of sediments in the njaba river watershed were assessed to highlight their potentials as good construction materials. Pdf floods in the niger basin analysis and attribution. Waec gce past questions and answers free download pdf all.
In nigeria, the dominant type of basement rock intersected by wells drilled for hydrocarbons, limestone, or water is granite. Petrophysical evaluation of reservoir sand bodies is the continuing process of integrating and interpreting geological, geophysical, petrophysical, fluid and performance data to form a unified, consistent description of reservoir properties throughout the field. Thermal conductivity for the underlying, marine shalysandstone agbada formation varies between 2. It is a shallow, linear depression with sedimentary fill of about 3,000 m thick udensi and osazuwa, 2004. Source rock thermal maturation of campanian enugu shale in anambra basin, southeastern nigeria was assessed by rockeval pyrolysis. In new brunswick the older part of the matapedia basin has been called a forearc basin, which developed during extension. The continental sediments of the nigerian coastal basins.
The benue trough of nigeria is a sedimentary basin that extends from the gulf of guinea in the southwest to the chad basin in the northwest for about 800 km in length and 150 km in width. Sedimentary basins and petroleum geology pdf download. Subsurface evaluation of source rock and hydrocarbon potential of the anambra basin, south eastern nigeria iheanacho princewill ugochukwu dissertation. Distribution of sedimentary formations in the bornu basin, nigeria article pdf available in shiyou kantan yu kaifapetroleum exploration and development 425. These two subbasins are named locally as the yedseramngadda subbasin to the south and the. The main oil source formations of the anambra basin, southeastern nigeria olugbenga a. The values recorded for all the soils are less than 4 mm hocm 1. The essential element of the concept is tectonic creation of relief, to.
Conceptual models of origin for nigerian frontier basin. Drainage basin morphology and terrain analysis of the. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. An overview of the geology and hydrogeology of nigeria chapter pdf available.
The nigerian national petroleum corporation nnpc and halliburton corporation have reached an agreement that will speed up oil discovery in the inland sedimentary basins. Heavy minerals and geochemical characteristics of sandstones as indices of provenance and source area tectonics of the ogwashiasaba formation, niger delta basin authors. The three sedimentary basins in nigeria are underlain by continental crust except in the niger delta, where the basement rock is interpreted to be oceanic crust. The lower benue trough is part of the benue trough of nigeria and it consists of a series of rift basins which form a part of the central west african rift system of the niger, chad, cameroon and sudan basement fragmentations. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. Thermal conductivity, porosity, lithology, well logs, geometric mean model, niger delta basin, nigeria discovery and innovation vol. The two sub basins that drain into lake chad in nigeria are located in borno and yobe states, which falls within latitudes 10. Facies modelling and reservoir geology of the offshore sediments, southeastern, niger delta, nigeria matthew o.
Formation evaluation of an onshore oil field, niger delta. Weathered layer delineation in an x field in the niger. The deeper and longer southern onitsha submarine basement feature, the nsukka high land and iii. Sedimentology and sequence stratigraphy of the nkporo group campanianmaastrichtian, anambra basin, nigeria sandstones obi, 2000. Oil seepages have also been reported from parts of the basin. Leadzincbarytes mineralization in the benue trough. Anambra basin is one of the energyrich inland sedimentary basins in nigeria 153 it is a nearly triangular shaped embayment covering about 3000 km 2 with a total sedimentary thickness of approximately 9 km 2. Sedimentology and depositional environments of the. Petroleum geology of cretaceoustertiary rift basins in niger, chad, and central african republic authors. Geological developments in the basin in terms of basin evolution and structural features have been discussed by many authors. The shallow and smaller ankpa subbasin to the north, which is separated from ii.
Anambra basin is one of the basins in nigeria, habouring the largest deposit of subbituminous coal and lignite. The site of the seepage is now classified as part of nigerian inland frontier basins1,2. The sedimentary basin of gabon lies on the west coast of africa, both onshore and offshore, between lat. Nigeria is underlain by seven major sedimenta ry basins, viz. Weathered layer delineation in an x field in the niger delta basin of nigeria. Geological survey of nigeria agency has played an active role in the exploration for mineral deposits in nigeria. The nigeria chad basin is part of the bornu basin, an intracratonic rift basin having an area of 2,335,000 km 2 and covering chad, niger, the cameroun republics, and northeastern part of nigeria. Onshore it extends 175 km eastward, covering a total surface area of 90,000 km 2 between the basement outcrop at the eastern limit and the 200 m isobath at the western. The study area lies within the area referred to as the tertiary niger delta complex fig. Part 3 takes the mineral resources of nigeria one on one, their geological environment, mode of occurrence, localities. Ten cretaceoustertiary rift basins in niger, chad and the central african republic c.
Sedimentary basins and petroleum geology of the middle east nairn, a. Sedimentary succes sions in these basins are of middle mesozoic to recent age. Radiogenic heat production estimated from the concentrations of the radioactive elements obtained from log data from a well drilled in the chad basin, ne nigeria range between 0. Sedimentological characteristics of ajali sandstone at. Geology and mineral resources of the lower benue trough.
The durban and zululand basins are located off the southeastern margin of southern africa. It is a preliminary stage process aiming to give additional information for the beginning of a stratigraphic harmonization project concerning sedimentary basins of the. The data also indicated that the sediments are low in the concentration of the radioactive element potassium, normal in thorium and. An assessment of the geotechnical aspects of njaba river. Well logsderived radiogenic heat production in the. The lower benue trough like other sedimentary basins in nigeria is found to be endowed with mineral resources. Umunya section, niger delta basin, nigeria adaeze i.
Geological survey editorial standards or with the north american stratigraphic. Convergent boundaries create foreland basins through tectonic compression of oceanic and continental crust during lithospheric flexure. Only about 10% of the areal extent of the basin lies within nigeria. These inland basins have no direct linkage with the niger delta,the atlantic. Geology and mineral resources of nigeria nuhu george. The present study examines the stratigraphic succession of benin and western nigeria offshore basins and attempts to compare these stratigraphic nomenclatures. Sc0951430 has satisfactorily completed the requirements for research work for the. The benue trough is one of the seven main sedimentary structural features in the sene nigeria. Implications for paleoenvironmental interpretation. Anambra basin showing the extension of ajali sandstone drawn from geological map of nigeria, gsn, 1994. Nnpc, halliburton intensify oil search in inland basin. Part 1 discusses the geology of the crystalline rocks and their regional distribution while the sedimentary basins constitute the subject of part 2.
Trace fossils from the campanian maastrichtian enugu. Sedimentary basins form primarily in convergent, divergent and transform settings. Udoh 1,2 department of geology, university of port harcourt, port harcourt, nigeria. Babatunde 2, and liao yuhong 3 1energy and environmental research group, dept of geology, university of ibadan, ibadan, nigeria. A nigerian newspaper and online version of the vanguard, a daily publication in nigeria covering nigeria news, niger delta. Pdf an overview of the geology and hydrogeology of nigeria. Petroleum geology of cretaceoustertiary rift basins in. Electrical conductivity values for all the soils are low table 8. When the caco 3 calcium carbonate was rated all the soils were considered suitable for irrigation use. Irrigation suitability evaluation of asu river basin soils.
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