Geological mapping was carried out and outcrop sections were examined alongside palaeocurrent directions from the greater part of the Campano-Maastrichtian outcrops in the Gongola Basin in Nigeria. Most of the wells that penetrated the basement are in the Eastern Dahomey embayment of western Nigeria. Kurowska and Schoeneich 2 Figure 1: Geological setting and location of the major structural units in Nigeria. In Nigeria, the dominant type of basement rock intersected by wells drilled for hydrocarbons, limestone, or water is granite. 1). Nigeria is underlain by seven major sedimenta- ry basins, viz: (from the oldest), the Calabar Flank, the Benue Trough, the Chad Basin, SE lullem- menden (Sokoto) Basin, the Dahomey Basin, and the Niger Delta Basin. About us | | 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. BENUE TROUGH See our User Agreement and Privacy Policy. New assessment for Central Nigeria's Bida basin highlights geological prospects The Bida basin is the least studied of all Nigeria's inland frontier basins. British Geological Surve⦠Looks like you’ve clipped this slide to already. An improved understanding of the paleogeographic evolution is essential ⦠The Bida Basin located at central Nigeria is one of the hinterland sedimentary basins in Nigeria and made up of sedimentary fill of about 3.5 km (Ojo 1984; Udensi and Osazuwa 2004).It is a northwestâsoutheast trending intracratonic structural depression adjacent to and contiguous with Sokoto and Anambra Basins in the northwest and southeast, respectively (Fig. Most of the wells that penetrated the basement are in the Eastern Dahomey embayment of western Nigeria. A new geological map was made for the basin and a revision of the lithostratigraphic succession shown in a cross section across the map. is a conscious effort by Federal Government of Nigeria to carry out integrated exploration to reduce risk to the mining investor and provide geoscience data. It may be ⦠A ⦠Sedimentary succes- sions in these basins are of middle Mesozoic to Recent age. Geologically, Nigeria comprises crystalline basement rocks and sedimentary basins, almost in equal proportions. Anambra Basin is one of the energy-rich inland sedimentary basins in Nigeria. (1963). [1] The sediment fill has a depth between 9â12 km. Both basins are of course low lying, as expected of a basin. If you continue browsing the site, you agree to the use of cookies on this website. Africa Groundwater Atlas: Hydrogeology of Nigeria. Clipping is a handy way to collect important slides you want to go back to later. The basins did not begin to fill with sediment until the Albian age of the Cretaceous. Numerous workers have worked extensively on different aspects of these rocks and only the key authors will be cited in this paper. The Objective of NIMEP is to reduce investors ⦠Engineering Geological Investigation of a Proposed Construction Site Area of Adekunle Ajasin University Sport Complex, Akungba-Akoko, Southwestern Nigeria Using Electrical Resistivity Article Oct 2016 It ispart of the broaderCENTRAL AFRICAN RIFTSYSTEM. Adapted from Carter et al. 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. This contribution presents a comprehensive review of the Upper Cretaceous geological evolution of Nigeria focusing on the Benue Trough and adjacent basins. In Nigeria, the dominant type of basement rock intersected by wells drilled for hydrocarbons, limestone, or water is granite. Home | | The Basement Complex of Nigeria is made up of crystalline (igneous and metamorphic) rocks which are so⦠OnlineNigeria.com 1998 - document.write(new Date().getFullYear()) © All rights reserved. 2018. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Articles XML | The middle ancient coastal sediments are oil-and gas-bearing. Unlike other sedimentary basins in Nigeria, it is characterized by the absence of volcanics, carbonates and rocks of Tertiary age. Academia.edu is a platform for academics to share research papers. Lokoja Sandstone. Privacy Policy | These mineral deposits were formed at different stages in the geological evolution of Nigeria. You can change your ad preferences anytime. It addresses the controversies regarding potential pathways of ingression during transgressive episodes that led to the establishment of the Trans-Saharan seaway. The book is divided into three parts. [1] : 153 It is a nearly triangular shaped embayment covering about 3000 km 2 with a total sedimentary thickness of approximately 9 km. The Benue Trough is a major geological formation underlyingalarge partof Nigeriaandextendingabout1,000 km northeastfromthe Bightof Benin to Lake Chad. Part 1 discusses the geology of the crystalline rocks and their regional distribution while the sedimentary basins constitute the subject of Part 2. the West and Central African Rift Systems) remains enigmatic owing to poor subsurface data coverage and quality. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. Sedimentary succes- sions in these basins are of middle Mesozoic to Recent age. However, the sedimentary successions in these basins are broadly divisible into: (2) middle marine shales and limestones interbedded with sandstones and siltstones; (3) upper sandstone sequence that is conti- nental or paralic. Sitemap XML, Non-Metallic Mineral and Industrial Materials. The sedimen- tary basins are of Cretaceous to Recent age. OCTOBER 2014. 1. It is part of the broader West and Central African Rift System. Tags | and Bellwood-Howard,I. The ages of the basement rocks span Precambrian to early Palaeozoic, having been consolidated during the Pan-African. (Adopted from Mukhtar and Xie, 2012) . Lagos lies on the Dahomey Geological Basin of Western Africa, which is situated just West of the Niger-Delta basin. The structure of igneous plumbing systems in circum-South Atlantic, intra-continental rift basins (e.g. Although a tripartite subdivision is also applicable to the Niger Delta, this sequence has been growing seaward with lower marine shales grading through thick ancient coastal sandstones and shales, into an upper continental sequence. The Basement Complex, which is Precambrian in age, is made up of the Migmatite-Gneiss Complex, the Schist Belts and the Older Granites. Latest Nigeria Articles | The recent ambush on oil exploration team in the North-East Nigeria by Boko Haram has put a damper on the nationâs drive to tap its highly underexplored inland basins, industry experts have said. The programme in its design took advantage of the known metallogenic belts in the country and ensured the use deep information, knowledge and skills residing in the government institution for the execution. GROUP V (2014/2015) Nigeria is underlain by seven major sedimenta- ry basins, viz: (from the oldest), the Calabar Flank, the Benue Trough, the Chad Basin, SE lullem- menden (Sokoto) Basin, the Dahomey Basin, and the Niger Delta Basin. Nigerian basins are broadly divisible into coastal Calabar Flank, Niger Delta, Dahomey Basin and interior basins (Benue Trough, Chad Basin, Nupe Basin, SE lullemmeden Basin). INTRODUCTION The Benue troughisa sedimentological featureinthe evolutionof the CretaceousandTertiary geologyof Nigeria.Itisalso a marine basin. News | | The basins, interpreted partially as troughs and rifts, were subjected to synsedimentary tectonic deformations during Cretaceus to Neogene times and affected by magmatic â volcanic episodes, which resulted in present structural pattern. Geological background. The occurrence of groundwater in Nigeria is dependant primarily on the geology, and groundwater regions can be classified accordingly. Part 3 presents the mineral resources of Nigeria, their geological environment, mode of occurrence, localities and where possible their estimated reserves. Falconer (1911) described the âLokoja seriesâ from various locations around the basin as a shallow water accumulation of ⦠It has a subaerial area of about 75,000 km 2 , a total area of 300,000 km 2 , and a sediment fill of 500,000 km 3 . In the southeast, poorly bedded sandy shale alternates with layers of sandstone and sandy limestone, containing ammonite, radiolarian, echinoid and gastropod fossils. A description of the existing stratigraphy of the basin are made as follows: 2.1. See our Privacy Policy and User Agreement for details. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 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