 | | Journal (article/letter/editorial) | | ASSOCIATED WITH MOLYBDENITE MINERALIZATION (KIGOM COMPLEX, NORTHERN NIGERIA) EBO GAB IMEOKPARIA Department of...of 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...complex of northern Nigeria is a small intrusive complex made up of peralkaline arfvedsonite granite, riebeckite-biotite...migmatite north of the Kigom Complex. A description and a reconnaissance map of the Kigom Complex have previously |  | | Journal (article/letter/editorial) | | OCTOBER 1961 YOUNGER INTRUSIVE ROCKS OF PLATEAU PROVINCE, NIGERIA, COMPARED WITH THE ALKALIC ROCKS OF NEW...By ROBERT GREENWOOD ABSTRACT In north-central Nigeria a group of rocks of alkalic affinities, known as...differentiation. The Younger Intrusive Series of Nigeria is highly discordant to pre-existing structures...remarkably similar to the Younger Intrusive Series of Nigeria in history, structure, and petrology. Mineralogical...complexes comparable in size and extent to those of Nigeria. One difference from the Nigerian occurrences is |  | | Journal (article/letter/editorial) | | 358 Amphiboles from the Younger Granites of Nigeria. Part I. Chemical classification. By Mrs. G. D....7 June 1962.] Summary. The Younger Granites of Nigeria contain varied assemblages of iron-rich ferromagnesian...out on the granitic ring-complexes of Northern Nigeria, no systematic study has been made of variations...25 000 square miles in the Northern Region of Nigeria. About forty of these complexes have been found...different localities in the Jos area of Northern Nigeria. AMPHIBOLES FROM NIGERIA. PART I 359 volcanic |  | | Journal (article/letter/editorial) | | by centres of ovcrsaturated magmatism such as Nigeria and Sudan. Thcre are also provinces with undersaturated...Geochemistry Mineralization Phanerozoic Cameron Niger Nigeria Sudan Saudi Arabia Namibia 1. Introduction Most...accompanied the uplift which followed it. I n Niger-Nigeria and also Sudan a more or less continuous sequence...Similarly the Mesozoic oversaturated magmatism of Nigeria has an almost identical age range to the mixed...similar age range to the oversaturated complexes of Nigeria. The Namibian Province (19CL120 ma) comprises of |  | | Report (chapter) | | COMPLEXES IN THE YOUNGER GRANITE PROVINCE OF NORTHERN NIGERIA CONTENTS I. INTSODUCTmN . . . . Page 5 ....19 23 35 42 (d) Rop . . (e) Sha-Kaleri. 9 (f) Jos-Bukuru (g) Banke (h) K u d a r u (i) Ningi . . ....thesis, unpublished). During the resurvey of the Plateau tinfields between 1945 and 1948, R. A. Mackay,...into the PreCambrian Basement Complex in Northern Nigeria. They are high-level, magmatic granites with sharply...There are about forty Younger Granite complexes in Nigeria. Until a complete survey of the province has been |  | | Journal (article/letter/editorial) | | 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...cassiterite associated with the Younger Granites of Nigeria. © 2012 Elsevier B.V. All rights reserved. 1....polycrase-(Y), Ce-rich pyrochlore, and niobophyllite–astrophyllite, among others (Guastoni et al., 2003, 2009; |  | | Journal (article/letter/editorial) | | history of the complex, include riebeckite-astrophyllite granites of close affinity to some of the Nigerian...the syenite which is believed to underlie the plateau to the east of the ridge. III. THE WESTERN LAYERED...siderite, zircon, white-mica (taeniolite), astrophyllite and molybdenite. The last named is extremely...only been observed in one loose block. The astrophyllite occurs as slender brown crystals, up to three... with golden brown bundles and rosettes of astrophyllite. The contacts with the gneisses are normally |  | | Book | | 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 |  | | Book | | ................................. 5.11 Bamoun Plateau ................................. 5.12 Mounts Bambouto...Benue Valley ....................... 5.15 Kapsiki Plateau .................................. 5.16 Other Volcanic...and Galinier (1847), on the northern Ethiopian Plateau in Tigre Province. A major advance in Ethiopian...reiterated a post-Jurassic age for the Ethiopian Plateau lavas. During 1883, the N. Thnganyika and S. Kenyan...the massive escarpment separating the Abyssinian Plateau from western Afar and the Red Sea had formed by |  | | Journal (volume) | | 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...prccambriennes de la partie meridionale du Haut Plateau angol ais. Bull. Bur. Rech. geol. min. (2 serie...localities mentioned in the text: Uganda: Bj-Buhweju plateau: K a-Kamena Fe; Ki-Kirwa W ; Ke-Karenge G4 granite:...(quartzites, sandstones and phyllites) in the Buhwcju plateau (Ankole, Uganda). At Buhweju, the placers nearly |  | | Book | | and Ruoritic types, and the oxidized Colorado Plateau deposits are desc1ibed vvith those that are unoxidized..., Blind River, \i\litwatersrand, and Colorado Plateau. The writer has attempted to present equitably... . . . . . . . . . . . . . . . . . . Colorado Plateau . . . . . . . . . . . . . . . . . . . . . . . ...In the disse1ninated deposits of the Colorado Plateau, two general types of pitchblende co1nn1only are...lodes in sandstones and conglomerates ("Colorado Plateau types") ( Chap. 10) with (a) a vanadiferous association |  | | Book | | 15%, Thailand 11%, Indonesia 12%, Australia 6%, Nigeria 1%, Zaire 1% with the remainder emanating from...concentration levels. This is well seen in Brazil and Nigeria, which although important producers, are almost...Portugal France, Massif Central - Brittany (4) Africa Nigeria Central Africa:Zaire, Rwanda, Burundi, Uganda,...microgranite, and rhyolite. Alkali granites present in Nigeria. Plutonic and porphyritic textures present. Economic...Very minor Secondary ores:- Major Examples. Nigeria Brazil - Rondonia ? South-West Africa General Environment |  | | Book (volume) | | the amphibolite facies of the Central Abukuma Plateau, Japan (Shido, 1958; Miyashiro, 1958), the (Mg...al. (1958) from the ring complexes of northern Nigeria, and in the rocks of this area the hedenbergite...R., 1958. younger granite province of northern Nigeria. No. 1. Jong, W. F. de, 1959. General crystallography...Gosaisyo—Takanuki district in the Central Abukuma Plateau. Journ. Fac. Sci. Univ. Tokyo, vol 11 p. 219. Morimoto...and Iritono districts in the central Abukuma Plateau. vol. 11, p. 131. Journ. Fac. Sci. Univ. Tokyo |  | | Book (volume) | | metamorphosed basic rocks of the Central Abukuma Plateau, Japan (Shid6 1958), and a somewhat similar paragenesis...Nakoso and Iritono districts of the Central Abukuma Plateau, Japan (Shid6é 1958). De Capitani & Liborio (1990)...Gosaisyo-Takanuki District in the Central Abukuma Plateau. J. Fac. Sci. Univ. Tokyo. sect. I, 11, 219-72...Nakoso and Iritono District in the Central Abukuma Plateau. J. Fac. Sci. Univ. Tokyo, sect. I, 11, 131-217...rocks of the Hitachi metamorphic complex, Abukuma Plateau, Japan (Tagiri 1977), actinolite occurs in lamellar |  | | Book (edition) | | . . . . . . 13.3 PLUME HEADS AND BASALT FLOOD PLATEAU LAVAS 13.3.1 Oceanic Plateaus . . . . . . . . ... . . . . . . 389 Anorogenic Ring Complexes in Nigeria and Niger . . . . . . . . . . . 390 GRANITES AND...Composition of Basalt from the Columbia River Plateau, Sample BCR-1a 54.06 Ag 27* Er 3.63 Nd 28...metamorphism. Water in an enclosed lake on a high plateau has gravitational potential energy relative to...102–103 km have apparently occurred in a single plateau flood. A relatively high extrusion rate for the |  | | Book (volume) | | bauchite (fayalite-bearing quartzmoozonite), Bauchi, Nigeria ('Oyawoye and Makanjuola, 1972). 31 32 33 34 Single-Chain...of the Tabito complex, Nakoso district, Abukuma plateau, Japan (Onuki and Kato, 1971). Phenocrysts of clinoenstatite...number of localities in the basement complex of Nigeria (Oyawoye and Makanjuola, 1972). Orthopyroxenes...of the Tabito plutonic complex in the Abukuma plateau. Sci. Repts., Tohoku Univ., Ser. HI, 11, 113- 123...described from the ring complexes of northern Nigeria (Jacobson et al., 1958) ; in the rocks of this |  | | Book | | large overabundances must be involved. On the plateau region of the curve of growth the equivalent width...ΓΊ I I I 1 1 ! 1 1 ! 1 1 11 1 1 H Columbia Plateau 5REE=232ppm - - ^ i- 1 1 —1 * ! 0.5 1 1 ...abbreviations: la-c, Main sandstone-types of the Colorado-Plateau (Newman, 1962). 2, German greywackes (Wedepohl...Carinthia). 2, Triassic sandstones of the Colorado Plateau (Newman, 1962). 3a-c, Sedimentary rocks of the...evolution of the younger granites of Northern Nigeria. Geochim. Cosmochim. Ada 26, 89-100. BROTZEN, O |
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