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| Northern Nigeria Mosv. s A. O•.^r)v. Abstract The JurassicYounger Granites of northern Nigeria are closelyassociatedwith...the fact that the hilly and rockytopographyof the Jos plateauhas resultedin a poor development of residualsoils...from residualand alluvial depositsshed from the fayalite-,amphibole-, granites(Falconer,1912). It is alsoknownthat...T^BLE 1. Average Chemical Composition of the Main Younger Granite Rock Types (after MacLeod et al., 1971)...of tin-bearing and barren granitesin northern Nigeria, and is in part basedon detailedprior knowledgeand |
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| POTENTIAL OF GRANITIC ROCKS FROM THE JOS-BUKURU COMPLEX, NORTHERN NIGERIA EBO GAB. IMEOKPARIA Department...Department of Geology, University of Ibadan, Ibadan (Nigeria) (Received May 7, 1979; accepted for publication August...potential of granitic rocks from the Jos--Bukuru Complex, northern Nigeria. Chem. Geol., 28: 69--77. Geochemical...analyses of fresh bedrock samples indicate that the Jos--Bukuru biotite granites are characterized by enhanced...ratios. These results, as applied to the Jos--Bukuru Complex, indicate that Sabon Gida and Rayfield have |
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| on April 26, 2015 RING COMPLEXES IN THE YOUNGER GRANITE PROVINCE OF NORTHERN NIGERIA CONTENTS I. INTSODUCTmN...II. GENERALFEATURES OlVTHE YOUNGER GRANITES (a) Distribution of the Younger Granites (b) Structural features...features (i) Volcanic structures (ii) Cone-sheets and ring-dykes (iii) The granite intrusions . (c) The (i)...Biotite-granites . Riebeckite-granites Amphibole-fayalite-granites . Basic and intermediate rocks. 6 6...Summary of the chemical characteristics of the Younger Granite province . 11 11 13 16 19 23 35 42 |
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| CENTRAL NIGERIA T.A. B A D E J O K O Department of Geology, University of Ibadan, Ibadan (Nigeria) (Accepted...trace-element content of Mesozoic granites in central Nigeria. Chem. Geol., 54: 43--51. Biotite- and riebeckite-granites...deposits associated with the Mesozoic Younger Granites of Nigeria. Enhanced values of Rb, Nb, Sn, Li and...magmatism. 1. I n t r o d u c t i o n The Mesozoic Younger Granite province of N i g e r i a is c h a r a...cover YOUNGER ,:,-"\ ~. !3'~I / GRANITE COMPLEXES ~ Granite and syenite r~--7Porphyry ring dykes |
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| northern Nigeria T.A. BADEJOKO Department of Geology, University of lbadan, Ibadan (Nigeria) LITHOS...granites, northern Nigeria. Lithos, 17: 259-271. The biotite granites in the Nigerian Younger Granites are...February 14, 1984) Introduction The Younger Granites o f Nigeria are characterized by e n r i c h m e...volcanic-subvolcanic granite c o m p l e x e s o f Nigeria c o m m o n l y have late granitic intrusive phases...al., 1971). Geological setting The Younger Granites of Nigeria form the southern extension of a series |
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| ALBITE-RIEBECKITEGRANITE, LIRUEI GRANITE RING-COMPLEX, NORTHERN NIGERIA I.P. ORAJAKA Department of Geological...Anambra State University of Technology, Enugu (Nigeria) (Received November 20, 1985; accepted for publication...albite--riebeckite-granite, Liruei Granite ring-complex, northern Nigeria. Chem. Geol., 56 : 85--92. The Kaffo...1. Introduction The Chad Basin of northeastern Nigeria has recently been the focus of intense exploration...geochemistry and petrogenesis of the Nigerian Younger Granite complexes have been corn- pleted by Bowden |
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| isotopic measurements from seven ring complexes in central Nigeria provide evidence for a systematic...occurred in the Jos Plateau region about 1 6 4 • ago. Although a small syenitetrachyte complex at Zaranda...unpublished ages of 290-330 m.y. for the southern Niger ring complexes confirm the existence of an overall southerly...southerly decreasing age trend in the Niger-Nigeria province of West Africa. Isotopic measurements on...spectrum has also been noted at the Shere Hills, near Jos, and at Liruei, near Kano, and may be representative |
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| Ahmadu Bello University, Zaria, Kaduna State, Nigeria a r t i c l e i n f o Article history: Received...Syenite Post-collisional magmatism Mineralization Nigeria a b s t r a c t The emplacement of anorogenic...collision. Where the hiatus is much longer, as in Nigeria, we appeal to a propagating zipper-like zone of...and cassiterite associated with the Younger Granites of Nigeria. © 2012 Elsevier B.V. All rights reserved...hiatus. It is not at all uncommon to find, in the younger cycle of magmatism, geochemically more evolved |
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| 358 Amphiboles from the Younger Granites of Nigeria. Part I. Chemical classification. By Mrs. G. D....7. [Read 7 June 1962.] Summary. The Younger Granites of Nigeria contain varied assemblages of iron-rich...been carried out on the granitic ring-complexes of Northern Nigeria, no systematic study has been made...calcalkali amphiboles, which are associated with fayalite, pyroxene, and biotite. This paper deals mainly...dealt with more fully in a future paper). The Younger Granites occur throughout an area of 25 000 square |
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| Printedin Northern Ireland Zirconium in Younger &mites of Northern Nigeria P. B~WDEN Mineral Resources Division...1906) Am--The zirconium oontent of 48 Nigerian Younger Granites hes been determined by X-ray fluorescence...and rubidium data the evolution of the Nigerian Younger Granites appears to have been controlled by two...considers the distribution of zirconium in 48 Nigerian Younger Granites and offers further proof of the concept...the agpaitic coefficient values of the Nigerian Younger Granites should provide an indication of the alkalinity |
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| K/Rb ratios in the evolution of the Younger Granites of Northern Nigeria J. R’. BUTLER, Pure Geochemistry...Liruei complex the ratio decreases progressively with time of rmplacement but in the A%mo complex the r&i0...irregularly. IKTRODUCTIOX THE Younger Granites of Northern Nigeria, recently mapped and described by...hornblende-granite emplaced to give individual or overlapping ring complexes, In the north the cycle of magmatic activity...in the form of a ring dyke; biotit’e-granite is subsequently intruded inside the ring dyke and may be |
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| auhvolanic t o plutonic nature often in the form of ring complexes. These can be subdivided into two separate...by centres of ovcrsaturated magmatism such as Nigeria and Sudan. Thcre are also provinces with undersaturated...the abundance of zircon, uranium. thorium and complex Ti-Zr silicates, the importance o f columbite,...Geochemistry Mineralization Phanerozoic Cameron Niger Nigeria Sudan Saudi Arabia Namibia 1. Introduction Most...subvolcanic to plutonic nature often in the form of ring complexes. These can be subdivided into two separate |
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| A GRAVITY INTERPRETATION OF THE LIRUEI RING COMPLEX, NIGERIA SIR,-I should like to consider some implications...negative anomaly was to be expected in the Liruei complex, which consists almost entirely of granitic rocks...almost completely acidic nature of the Nigerian Younger Granite province has long been recognised from...evidence from Liruei now shows that these granitic ring-complexes are unlikely to be associated with large...basic magma-cannot therefore readily be applied to Nigeria. The gravity survey indicates that the contacts |
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| Scotland The anorogenic granitoids of Nigeria are classic exampl& of ring complexes associated with migrating...peraluminous biotite granite, through hypersthene and fayalite granites to peralkaline aegirine. riebeckite-arfvedsonite...the south. The majority of the Nigerian anorogenic ring-complexes represent the roots of volcanoes with...suitc of Mesozoic volcanic and plutonic rocks from Nigeria. Analyses of the crystalline basement rocks arc...elements Subsolidus mobilities Anorogenic granites Nigeria Fluids Geochemical characteristics 1. Introduction |
 | Amuda, Abdulgafar Kayode, Yang, Xiaoyong, Deng, Jianghong, Faisal, Mohamed, Cao, Jinya, Bute, Saleh Ibrahim, Girei, Musa Bala, Elatikpo, Safiyanu Muhammad (2021) Petrogenesis of the peralkaline Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments. International Geology Review, 63 (16) 2057-2081 doi:10.1080/00206814.2020.1821250 | Journal (article/letter/editorial) |
| Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Sciences, Bayero University Kano, Kano State, Nigeria; dDepartment of Geology, Faculty of Science, Suez...eDepartment of Geology, Ahmadu Bello University, Zaria, Nigeria ABSTRACT ARTICLE HISTORY The Dutsen Wai and Ropp |
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| WITH MOLYBDENITE MINERALIZATION (KIGOM COMPLEX, NORTHERN NIGERIA) EBO GAB IMEOKPARIA Department of Geology...Geology, University of Benin, Benin City (Nigeria) (Received August 8, 1983; revised and accepted April...mineralization (Kigom Complex, northern Nigeria). Chem. Geol., 47: 261--283. The Kigom igneous complex of northern...northern Nigeria is a small intrusive complex made up of peralkaline arfvedsonite granite, riebeckite-biotite...major-element chemistry typical of that of the Nigerian Younger Granites, and are enriched in Rb, Li, Zr, Nb, Th |
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| GRANITES OF THE LIRUEI (RIRIWAI) COMPLEX, YOUNGER GRANITE PROVINCE, NIGERIA S.J. EKWERE and M.A. OLADE*...Department of Geology, University of Calabar, Calabar (Nigeria) (Received May 19, 1983; revised and accepted...granites of the Liruei (Ririwai) Complex, Younger Granite Province, Nigeria. Chem. Geol., 45: 225--243. Geochemical...riebeckite--aegirine granites from the Ririwai Complex indicate that these rocks contain enhanced concentrations...Granite g e o c h e m i c a l p r o v i n c e o f Nigeria. M o s t o f t h e r o c k s c o n t a i n e n |
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| George Obaje Geology and Mineral Resources of Nigeria 123 Prof. Nuhu George Obaje Nasarawa State University...University Dept. Geology & Mining Keffi Nigeria nobaje@yahoo.com ISSN 0930-0317 ISBN 978-3-540-92684-9...Resources of Nigeria are very few and mostly not accessible in Libraries and Bookshops in Nigeria. This book...activities in the Geology and Mineral Resources of Nigeria. The author has brought together several published...students of geology in tertiary institutions in Nigeria and abroad. Additional insights were also provided |
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| Tugarinov (1968) Permian (Granites) JosPlateau, Nigeria Bolivia Pando, Rond6nia Eastern Andes Hunan...Potgietersrus / S. Africa o v iseu / Portugal ß Jos-Bukuru/Nigeria ß Northern 'r ' Portugal B 0.1 0.1...Australia Potgietersrus, South Africa JosPlateau, Nigeria Jurassic Alijo-Sanfins, Portugal Hercynian granites(1)... 8o lO / t•. •0("o o øtOoo o o % ;Jos-Bukuru /Nigeria Pot g, etersrus/S. Africa 0.1 i 0.1 i... Cord. • Northern [] Massif RN FRG Bohvla Nigeria Central, France ß 0.1 ß 10 100 Sn I lOOO |
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| Gallium in Younger Granites of Northern Nigeria Geological Survey of Tanganyika, P.O. Ros 903, Dodoma...Abstract-The concentration of gallium in 38 Nigerian Younger &‘anitos is shown to increase from 18 ppm in the...previously report,ctI rrtbidium da.ta. Younger Granites of No~hern Nigeria? described by JACOBSON ef al. (195S)...emplaced to Chemically the Younger Granites give individual or overlapping ring complexes. are a closely...to determine the dif%rentiation t,rends of the Younger Granites. THE consist, ANALYTICAL TECHNIQUES |
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| Printed in NorthernIreland Lithium in Younger Granites of Northern Nigeria P. BOWDEN Mineral R,esources Division...= t0.457). The rare alkali data for the Liruei complex indicates t’hat both lithium and thallium increase...riebeckit~o-granites (BOWDEPJ, 1964). INTRODUCTION NIGERIAX Younger Granites, described by JACOBSOX et al. (1958),...and caesium (BUTLER and THOMPSON, 1963) in the Younger Granites has been investigated, and in order to...level. available. DISTRIBUTION OF LITHIUM IN THE YOUNGER GRANITES Lithium (Lil+, 0.76 A*) tends to concentrate |
 | Amuda, Abdulgafar Kayode, Li, Shuang, Yang, Xiaoyong, Cao, Jingya, Faisal, Mohamed (2022) Genetic Association between Granites and Mineralization at the Gindi Akwati Cassiterite–Sulfide Deposit, North-Central Nigeria: Insights from Mineralogy, Fluid Inclusions, and Sulfur Isotopes. Minerals, 12 (6) 761 doi:10.3390/min12060761 | Journal (article/letter/editorial) |
| Akwati Cassiterite–Sulfide Deposit, North-Central Nigeria: Insights from Mineralogy, Fluid Inclusions, and...Akwati Cassiterite–Sulfide Deposit, North-Central Nigeria: Insights from Mineralogy, Fluid Inclusions, and...Sciences, Bayero University Kano, Kano 700241, Nigeria Guangxi Key Laboratory of Hidden Metallic Ore Deposits...western boundary, northcentral Nigeria. The intrusion of Jurassic Younger granite porphyry sheared the...inclusion; sulfur isotope; granite; north-central Nigeria 1. Introduction Globally, granites, including |
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| London, Special Publications Niger-Nigerian alkaline ring complexes: a classic example of African Phanerozoic...Library on June 9, 2014 Niger-Nigerian alkaline ring complexes: a classic example of African Phanerozoic...development of chains of volcanoes now exposed as ring complexes with Palaeozoic and Mesozoic ages. The...between alkali metasomatism in alkaline granite ring complexes and fenitization associated with carbonatites...relevance to the anorogenic alkaline ring complex province in Niger and Nigeria. For example, the Pan-African |
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| GEOLOGICAL ABSTRACTS Part 8. Part 9. Swaziland Nigeria . • • • • • • • • • 343 , ' • • •...APPLICATION PROBLEMS . OF Gold Coast . Sierra Leone . Nigeria . . Uganda . . Kenya . . Tanganyika . Northern...making of cement, and in a number of them, as in Nigeria, Gold Coast, Kenya, Tanganyika, and Nyasaland,...investigation of ground-water supplies, and even, as in Nigeria, N yasaland, and Uganda, with their development...and grouted. Nigeria For about 16 years prior to 1947 the Geological Survey of Nigeria carried out an |
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| Geochemistry of the Tioueine Pan-African Granite Complex (Hoggar, Algeria) : A. Azzouni-Sekkal and J . Boissonnas...Accessory Mineralogy of the Ririwai Biotite Granite, Nigeria, and its Albitized and Greisenized Facies: R. A...Magmatism, and Metamorphism in the Lower Benue Trough, Nigeria: J. Benkhelil ................... 467 A Model for...that the second event may be correlated with a younger orogeny possibly linking it to the Eburnean. ©...The oldest surrounding granitoids are coeval or younger than the supracrustals and both intrusive and |
