metamorphic rocks in northern nigeria

The Algoma-type iron-formations of the Nigerian ,

The Algoma-type iron-formations of the Nigerian ,

Abstract Field relationships as well as petrographical and geochemical considerations form the basis of a model for the origin of the protoliths of the iron-formations and the associated phyllitic host rock of the Palaeoproterozoic schist belts of northern Nigeria

Metamorphic isograds of Uwet area, southeastern Nigeria ,

Metamorphic isograds of Uwet area, southeastern Nigeria ,

The is,grad is also faulted In thin section, muscovite is absent in rocks marking this is,- grad This shows that it is the upper (or second) silli- manite is,grad of Uwet area There is a coexistence of Metamorphic isograds of Uwet area, southeastern Nigeria 453 fibrolite, prismatic sillimanite and equant kyanite in the isograd

Geo-electric investigation of the groundwater Potential ,

Geo-electric investigation of the groundwater Potential ,

Geo-electric investigation of the groundwater Potential distribution within the Northern Basement Complex of Nigeria E A Kudamnya and J O Osumeje ABSTRACT: Kaduna, a town within the crystalline hydro-geological province of the Basement Complex of northern Nigeria,

Overview of fluoride distribution in major aquifer units ,

Overview of fluoride distribution in major aquifer units ,

Over 50% of northern Nigeria is covered by both the rocks of the basement complex rock types and the sedi- mentary rocks (Figure 1) The Older Granites, migmatite and gneissic rocks comprise the extensive mass of metamorphic rocks un- derlying most areas of the north and west of the country The rocks include different textures of granites .

(PDF) Geology and Petrography of Basement Rocks around ,

(PDF) Geology and Petrography of Basement Rocks around ,

The evolution of the rocks has been linked to at least three past tectonic events ranging from Archaean to Pan African The area been mapped on a scale of 1:25,000 and is a metamorphic terrain typical of the Nigeria Basement Complex of North-western Nigeria

Abstract - Harvard University

Abstract - Harvard University

The hematite facies and the silicified silicate facies are restricted to southern Nigeria where the second and heterogeneous tectono-metamorphic event is more pronounced (amphibolite facies conditions) than in northern Nigeria

Geographical mapping of fluoride levels in drinking water ,

Geographical mapping of fluoride levels in drinking water ,

Precambrian metamorphic rocks and late Paleozoic to Mesozoic granites form the crystalline basement complex which is unconformably covered by Cretaceous to Holocene continental and marine sediments The basement complex crops out more extensively in northern Nigeria, while the sedimentary rocks are most commonly found in southern Nigeria, and .

Comparative study of groundwater resources in the basement ,

Comparative study of groundwater resources in the basement ,

Cretaceous – Tertiary Sokoto basin and the rocks of the crystalline shield of northern Nigeria Gundumi formation occupied the NW, NE and part of SW in the area of study, this formation account for 21% of the sedimentary rocks in Zamfara state It consist of clay mostly with interbedded sand and gravel lenses, the age of the Gundumi is upper

Petrology and Geochemistry of Basement Complex Rocks in ,

Petrology and Geochemistry of Basement Complex Rocks in ,

The determination of the mineralogical composition of rocks that underlie Okom-Ita area, in Oban Massif became necessary for the interpretation of the petrogenesis and protoliths of rocks in the area Twelve representative rock samples were selected for thin section petrography and bulk rock geochemical analysis The results reveal that the dominant intrusive rocks in Okom-Ita ,

Blast Rocks Bus Station In Northern Nigeria - Politics ,

Blast Rocks Bus Station In Northern Nigeria - Politics ,

Suspected Boko Haram attack hits bus station in the town of Azare in Nigeria's northern Bauchi state, witnesses say A large explosion has rocked a bus station in a northern region of Nigeria previously targeted by Boko Haram, witnesses said, in what appeared to be the latest crack in the government's purported ceasefire with the armed group

Blast rocks bus station in northern Nigeria | Nigeria News ,

Blast rocks bus station in northern Nigeria | Nigeria News ,

Oct 23, 2014· Blast rocks bus station in northern Nigeria Suspected Boko Haram attack hits bus station in the town of Azare in Nigeria's northern Bauchi state, witnesses say 23 Oct 2014 00:41 GMT

Blast rocks bus station in northern Nigeria - Graphic Online

Blast rocks bus station in northern Nigeria - Graphic Online

Oct 23, 2014· Blast rocks bus station in northern Nigeria A large explosion has rocked a bus station in a northern region of Nigeria previously targeted by ,

Geochemistry and petrogenesis of gneisses around kafur ,

Geochemistry and petrogenesis of gneisses around kafur ,

Jul 04, 2013· The Oldest Rocks in West Africa: SHRIMP Zircon Age for Early Achean Migmatitic Orthogneiss at Kaduna, Northern Nigeria Journal of Geology, university of ,

`Blast rocks bus station in north Nigerian city of Kano ,

`Blast rocks bus station in north Nigerian city of Kano ,

Jul 25, 2014· `Blast rocks bus station in north Nigerian city of Kano` At least one person was killed and eight other people injured when a blast ripped through a crowded bus station in Kano, northern Nigeria, police and witnesses said on Thursday

List of Nigeria Natural Resources and Solid Mineral ,

List of Nigeria Natural Resources and Solid Mineral ,

This section of the site is about Nigeria natural resources and solid minerals deposits from different Nigeria States, regions and other locations Each content also contains information, maps, pictures or images as well as the uses and products derived from such minerals after each final processing

Abstract - Harvard University

Abstract - Harvard University

Abstract Akwanga NW, Plateau State, Nigeria is underlain by pelitic to semipelitic schists which locally grade up to the sillimanite zone of regional metamorphism Other rock types include migmatitic gneisses, small metaquartzitic bodies, augen-gneiss, granite-gneiss, granites, pegmatites and delerit

Petrology and Geochemistry of Basement Complex Rocks in ,

Petrology and Geochemistry of Basement Complex Rocks in ,

The determination of the mineralogical composition of rocks that underlie Okom-Ita area, in Oban Massif became necessary for the interpretation of the petrogenesis and protoliths of rocks in the area Twelve representative rock samples were selected for thin section petrography and bulk rock geochemical analysis The results reveal that the dominant intrusive rocks in Okom-Ita area are .

Ririwai Mines, Kano, Nigeria - Mindatorg

Ririwai Mines, Kano, Nigeria - Mindatorg

Ririwai Mines, Kano, Nigeria : Greisenized granite with related quartz veins A tin-zinc mine owned by Nigerian Mining Corp Closed before 1984

Review of Gully Erosion in Nigeria: Causes, Impacts and ,

Review of Gully Erosion in Nigeria: Causes, Impacts and ,

Gully erosion, the most impressive and striking erosion type, has been recognized as one of the major global environmental problems Many States in Nigeria are currently under the threats of this phenomenal process, south-eastern part of the country being the most affected It has numerous causes; and these causes can be both naturally and artificially-induced, but the underlying geology and .

Granulite facies metamorphism and charnockite plutonism ,

Granulite facies metamorphism and charnockite plutonism ,

Incipient granulite facies conditions and charnockitization affected metasedimentary formations of northern Nigeria during the early stage of the Late Neoproterozoic (Pan-African) orogeny

Geochronology of Precambrian basement rocks from Ibadan ,

Geochronology of Precambrian basement rocks from Ibadan ,

A Sb-Sr isochron age of 2205 ± 70 my given by a granite gneiss demonstrates that Eburnean granitic and older metamorphic rocks are widespread in southwestern Nigeria In the Ibadan area the reactivation due to the Pan-African thermo-tectonic event (600 ± 150my) ,

Gemstones from Africa | Gem Rock Auctions

Gemstones from Africa | Gem Rock Auctions

Mozambique Metamorphic Belt The minerals mineral diversity is the most significant portion of the Mozambique Metamorphic Belt, which is a huge continent-scale region more than 600 million years old It is considered a metamorphic region stretching from Madagascar into northern ,

Metamorphic isograds of Uwet area, southeastern Nigeria ,

Metamorphic isograds of Uwet area, southeastern Nigeria ,

The is,grad is also faulted In thin section, muscovite is absent in rocks marking this is,- grad This shows that it is the upper (or second) silli- manite is,grad of Uwet area There is a coexistence of Metamorphic isograds of Uwet area, southeastern Nigeria 453 fibrolite, prismatic sillimanite and ,

Determination of Magnetic Basement Depth over Parts of ,

Determination of Magnetic Basement Depth over Parts of ,

susceptibilities and/or remnant magnetization Sedimentary rocks, in general have low magnetic properties compared with igneous and metamorphic rock that tend to have a much greater magnetic content Thus, most aeromagnetic surveys are useful to map structure of the basement and intruded igneous bodies from basemen complex [2]

North Region (Cameroon) - Wikipedia

North Region (Cameroon) - Wikipedia

The North Region (French: Région du Nord) makes up 66,090 km² of the northern half of The Republic of CameroonNeighbouring territories include the Far North Region to the north, the Adamawa Region to the south, Nigeria to the west, Chad to the east, and Central African Republic to the southeast The city of Garoua is both the political and industrial capital

Geochronology of Precambrian basement rocks from Ibadan ,

Geochronology of Precambrian basement rocks from Ibadan ,

A Sb-Sr isochron age of 2205 ± 70 my given by a granite gneiss demonstrates that Eburnean granitic and older metamorphic rocks are widespread in southwestern Nigeria In the Ibadan area the reactivation due to the Pan-African thermo-tectonic event (600 ± 150my) appears to have been largely thermal in character

Borehole depth and regolith aquifer hydraulic ,

Borehole depth and regolith aquifer hydraulic ,

The Northern Nigerian Basement Complex comprises three groups of rocks namely, migmatites and (high grade) gneisses derived from Birrimain sedimentary rocks through high grade metamorphism and graniti-zation; the Younger Metasediemnts of Upper Proterozoic age which are low grade metamorphic rocks that were

Gemstones from Africa | Gem Rock Auctions

Gemstones from Africa | Gem Rock Auctions

Mozambique Metamorphic Belt The minerals mineral diversity is the most significant portion of the Mozambique Metamorphic Belt, which is a huge continent-scale region more than 600 million years old It is considered a metamorphic region stretching from Madagascar into northern Kenya

Geochemical characteristics of tin-bearing and tin-barren ,

Geochemical characteristics of tin-bearing and tin-barren ,

Geochemical characteristics of tin-bearing and tin-barren granites, northern Nigeria , The Jurassic Younger Granites of northern Nigeria are closely associated with tin and niobium deposits , biotite granite Africa greisen geochemistry economic geology metamorphic rocks mineral exploration Mesozoic igneous rocks Jurassic metal ores .

Major Rocks In Nigeria - migmatite, gneiss, migmatite ,

Major Rocks In Nigeria - migmatite, gneiss, migmatite ,

The Nigeria basement complex have been conformed to comprise of three major rock units of which are; migmatite, gneiss, migmatite gneiss, the schist belt and older granite and younger granite complexes and all of these are seen in different location of the studied area From this description of rocks units and also the younger granite intrusion