Geology and mineral resources of the lower benue trough, nigeria. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks. Petrochemistry and genetic indicators of talcose rock of esie. Read, highlight, and take notes, across web, tablet, and phone. Provenance and depositional environment of sediments of. Geological mapping and exploration of the northwestern obudu basement areas had been few and inadequate compared with its northern and southwestern counterparts, and the sedimentary areas. Please see wikipedias template documentation for further citation fields that may be required. Apart from the properties mentioned above, nepheline syenite has a. Data for this study were obtained from direct field measurements. This formation has been found to evolve in turonian time peters, 1978. The groundwater potential evaluation at industrial estate ogbomoso, southwestern nigeria ocena potenciala podtalnice na industrijskem obmocju ogbomoso v jugozahodni nigeriji l. E provenance and depositional environment of sediments of the awi formation, calabar flank, southeastern nigeria 2. Half of nigerias land is composed of three main basement complexes located in the west, the northwest and the southeast. Nkalagu formation type section is located at the nkalagu limestone quarry of nigeria, where it is well exposed in two quarry faces.
Geology and mineral resources of the lower benue trough. The southwestern nigeria falls between latitude 7 0n and 10 0n and longitude 2 0e and 7 0e which is made up of rocks which are mainly precambrian in age. Abstract the study area falls within the basement complex of southwestern nigeria. The geology of nigeria, as detailed in kogbe 1989, is made up of three main rock groups. Map of nigeria showing the position of ogun state j. Nigeria has extensive natural resources and is the largest crude oil producer in africa and 20 billion barrels of reserves. In southwestern nigeria, afowo formation is the main petroliferous formation. Nigeria indicating ogun state is located, while figure 2 shows map of ogun state where ewekoro is located. Rb versus nb y and nb versus y, and thta ratio combined with field observations and empirical information from the literature were used to infer the tectonic environments and sources of the rare metal mineralization in the pegmatites of komu area, southwestern nigeria.
The northeastern part of the town is undoubtedly the. Both have been described extensively by several authors in southwestern nigeria. Generally, species nomenclature for dinoflagellate cysts followed fensome and williams 2004. Ilesha and environ fall within the crystalline basement complex of southwestern nigeria. Several studies have also been carried out to evaluate the distribution of limestone deposits at ewekoro quarry. Pdf an overview of the geology and hydrogeology of nigeria. It reported findings from a research on gravel supply studies in the study area. Nndcs shareholders comprise the 19 northern states of nigeria, represented by the respective secretaries to the state governments. The mineral resources so far reported in the trough by the geological survey of nigeria agency are discussed below. The study area belongs to the precambrian basement complex of southwestern nigeria which lies to the rest of the west african craton in the region of late. Trace fossils from the campanian maastrichtian enugu. Department of geography and environmental science university of calabar, calabar, p. This paper discusses the perception of gravel suppliers in the six states situated in southwestern nigeria. It is separated from the niger delta by a subsurface basement high referred to as the okitipupa ridge.
Gravel mining and supply for construction a case study of. Gravel mining and supply for construction a case study of southwestern nigeria scientific. Geoenvironmental assessment of pegmatite mining site around. Results reveal that the formation has 46 geoelectric layers, with the fifth recording hydraulic conductivity, transmissivity and transverse resistance values that suggested a general high yield to. Major gravel pits, together with their perceived technical characteristics in the states were identified through a structured questionnaire designed to solicit response from truck drivers and. The boreholes were lithologically and geophysically logged. Sc831912 title the geology and economic mineral deposits of areas around muro hill, nigeria faculty physical sciences department geology date february, 1987 signature. Interpretation of high resolution aeromagnetic data for. Togo and the republic of benin to southwestern nigeria 1 as abstract the dahomey basin is an amalgamation of inlandcoastaloffshore basin that expanses from southeastern ghana through togo and the republic of benin to southwestern nigeria. Vertical electrical sounding method was employed and schlumberger configuration was adopted. Groundwater quality appraisal of some handdug wells and.
Owo is situated halfway between the towns of ile ife and benin city figure 1. Savannah petroleum plc memorandum of understanding. Provenance and depositional environment of sediments of the. Economic prospects of nepheline syenites occurring around. Owo is in southwestern nigeria, at the southern edge of the yoruba hills, and at the intersection of roads from akure, kabba, benin city, and siluko. Evaluation of terrain conditions in ilesa schistbelt. A subsurface sequence delineation and saline water mapping of lagos state was carried out. Ree geochemistry and protoliths of gneisses of northwest. International journal of scientific and engineering research, 29, pp. Groundwater quality appraisal of some handdug wells and boreholes around okemesi and ikoro area, southwestern nigeria. Petrochemistry and genetic indicators of talcose rock of. Adeoti geoelectrical assessment of groundwater potential at.
Geological survey of nigeria agency has played an active role in the exploration for mineral deposits in nigeria. Between these massifs, sedimentary basins are strung out along a northeastsouthwest axis from lake chad to the niger delta, i. Evaluations of turonian limestone formation exposed at. It overlies the ise formation and consists of coarse to medium grained sandstones with thick intercalations of shales, siltstones and pyritised clay. Ten 10 llected from seven 7 dugwells in april, 1997, were analyzed to assess the bacteriological quality of the groundwater. Department of geology, anambra state university, uli, anambra state, nigeria author for correspondence abstract source rock thermal maturation of campanian enugu shale in anambra basin, southeastern nigeria was assessed by rockeval pyrolysis. Agency for international development madaoua 0 985 112 958 zurmi kaura namoda gusauh watersupply paper plate 4 explanation 1110 group rima group kg gundumi formation contact 1757l 140 eso ruawuri. Pdf structural geology of the basement complex rocks in. A total of 40 ves were carriedout using schlumberger electrode.
Results of the analyses indicate a range of ree abundances and distinctive patterns from highly fractionated patterns with negative eu anomalies in granitic rocks to relatively low abundances and less ree fractionated flat patterns with little. Nwajide and reijers 1996, umeji, 2003 and chiaghanam, 2008 have studied the nanka formation with respect to their lithostratgrphy, age relations, sequence stratigraphy, depositional environment, reservoir. Tectonic environments and rare metal mineralization in. The study area is located in part of osun state and ekiti state, southwestern nigeria. Abuja leather is the oldest mining site in komu southwestern nigeria which lies within the basement lized pegmatite veins. The total extent along a nnessw strike is about 10 km although the outcrops are not continuous.
Sedimentology and sequence stratigraphy of the eocene. Both crystalline and sedimentary rocks were represented in the study area. Geology and geotectonic setting of the basement complex. According to 11, the basal part of the formation consists of well sorted subrounded fluviatile sand with mixed. Nguzu edda lies within the afikpo syncline of the southern benue trough, nigeria. Southwestern nigeria department of geosciences, university of lagos, akoka, lagos state, nigeria. The technical characteristics of gravels from southwestern nigeria are also perceived to be good in construction, though these assertions need to be empirically proved. Nkalagu limestone is a rock unit in nkalagu formation of the lower benue trough. The survey was flown in drape mode using real time differential gps at a sensor mean.
Analysis of physical parameters of limestone deposits in. Geological mapping, petrological study and structural. Laboratory, esrtment of soil science, university of nigeria, nsukka. Economic prospects of nepheline syenites occurring around awo. The eburnean event is marked by the emplacement of the ibadan granite gneiss in southwestern nigeria which has been dated 2500200ma rahaman 1988 and a pink granite gneiss at ileife southwestern nigeria dated 1875ma using upb on zircon. The role of nigerian stock exchange in the development of the nigerian economy includes abstract and chapter one, complete project material available the role of nigerian stock exchange in the development of the nigerian economy abstract this study is on the work of the nigerian stock exchange in the development of. Precambrian geology of nigeria including the southwestern nigerian basement complex.
Adeoti geoelectrical assessment of groundwater potential. For dinoflagellates and acritarchs, monographs of powell 1992, jan du chene 1987 and sluijs et al. Gravel mining and supply for construction a case study. Of the goldbearing rocks around okemesiijero area, southwestern nigeria 1akanmu tumise 1oshin oyeyemi oyekunle olusiji samuel. Rock samples representing various igneous and metamorphic rocks of southern obudu plateau were analyzed for rareearth element ree behavior by icpms. As such, petroleum is central to economy of nigeria, producing 80 percent of government revenues and 95 percent of export earnings. The drillers lithological logs aided by gamma and resistivity logs, showed that the area is underlain by clays, sandysilty clays, clayey. The slides, residues, unprocessed samples, cd copies and duplicate prints are in the palynological collections of the biological sciences department.
Western cameroon into southeastern nigeria fitton, 1980. Integration of geophysical and remotely sensed data in regional groundwater evaluation in the basement complex of ondo state, southwestern nigeria f. In ilesha area, the rocks of the schist belt are structurally divided into two main segments by a major. Lesedition, 2002 international journal of development and economic sustainability vol.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. It is located between longitude 7 29 00 n to 7 42 00 n and latitudes 4 38 00 e to 4 59 00e covering an area extent of 954. It forms a part of the ifeilesha schist belt of southwestern nigeria elueze, 1981. Narratives of women presenting with abortion complications. University of nigeria research publications author anike, okechukwu luke pgm. Pdfdateien in einzelne seiten aufteilen, seiten loschen oder drehen, pdfdateien einfach zusammenfugen oder. Palynology and paleoenvironments of the upper araromi. This research project involves detailed investigation of index properties and rate of consolidations of nguzu edda lateritic soil used for road construction so as to give details of soil behaviour in solving engineering and environmental issues. The lower benue trough like other sedimentary basins in nigeria is found to be endowed with mineral resources.
The ancient town had a central market that linked people from the northern part of the country to the people of the south. Thirtytwo points were sounded along three different sections of the town namely. Omitogun3 1department of physics adeyemi college of education, ondo, nigeria email. Enugu shale in anambra basin, south eastern, nigeria anozie h. Ten 10 deep boreholes with average depth of 300 m were drilled within the sedimentary basin. Half of nigeria s land is composed of three main basement complexes located in the west, the northwest and the southeast. Hydrogeological potential and qualitative assessment of. Source rock thermal maturation of campanian enugu shale in anambra basin, southeastern nigeria was assessed by rockeval pyrolysis. Geophysical study of the northeastern part of owo was conducted to investigate the geoelectric characteristics of its aquiferous units and its implication on groundwater potential of the area. Odumodu cfr, mode aw 2017 trace fossils from the campanian maastrichtian enugu formation of the anambra basin, southeastern nigeria. Integration of geophysical and remotely sensed data in. Introduction owo, a town in ondo state, southwestern nigeria, is an agrarian community with some commercial activities.
Geoelectric characterization of aquiferous units and its. W ater resources inventory of southwestern nigeria sho ws that water supplies are mostly from surface sources, such as dams and weirs in streams and rivers. These heavy mineral assemblages indicate that the igneous and metamorphic rocks of the nigerian basement complex particularly the. Rahaman preliminary report on the field relationships of the basement complex rocks around igarra, midwest i. The study area is within north of ogbomoso metropolis, southwestern nigeria and covers about 3025 square km between longitudes 04 00.
Detailed investigation of index properties and rate of. In addition to the specific gravity, syenites around awo have a high standard strength of about 9. The data set were total field aeromagnetic data sheet number 222 acquired during high resolution airborne geophysical surveys of nigeria between 2003 and 2009 by fugro airborne survey limited for nigerian geological survey agency. The countrys other river system involves various rivers that merge into the yobe. Area j4, southwestern, nigeria using the direct laboratory method to characterize the mica schist into different degrees of purity for both economic and commercial purposes. The dominant lihologic units are quartzites of effon psammite formation which occur mostly as. With pdf merger you can merge your multiple pdf files to a single pdf file in matter of seconds.
Department of earth sciences, ajayi crowther university p. Geoenvironmental assessment of pegmatite mining site. The first seven samples were collected early in the morning before wells were opened for general use. Results reveal that the formation has 46 geoelectric layers, with the fifth recording hydraulic conductivity, transmissivity and transverse resistance values that suggested a. Implications for paleoenvironmental interpretation. Sedimentology and sequence stratigraphy of the eocene nanka. Enugu expressway in anambra state, southeastern nigeria. Evaluation of terrain conditions in ilesa schistbelt areas. Petrogenetic significance of rareearth element behavior in.
Figure 1 shows the map of nigeria indicating ogun state is located, while figure 2 shows map of ogun state where ewekoro is located. Variability in the geotechnical properties of some residual clay soils from southwestern, nigeria. The groundwater potential evaluation at industrial estate. Odeyemi intermediate rocks from older granite complexes. Most of the samples are medium to finegrained in texture with a characteristic soapy touch. Structural geology of the basement complex rocks in iwaraja area, southwestern nigeria article pdf available september 2016 with 4,390 reads how we measure reads. The sedimentary rocks which underlie about 4,000square miles 6,400km2 were mapped and described by jones 1964 while jones and hockey. Investigations were conducted to determine the geoelectric properties, aquifer potential and quality of groundwater samples of the ajali sandstone formation at ninth mile area, nigeria. Spatial variability of soil properties in the obudu.
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