The Mamu shale Description and observation of outcrop: Granite, pegmatite, Schist and Quartzite Description and observation of outcrop: Joints, lineation and foliation,veins and folds are some of the Structural features found in the study area. Muscovite occurs as shapeless grains with pinkish coloration. Very coarse, poorly sorted, milky in colour, 0. Pp 57 —
Metaconglomerate at location 4. The plagioclase appear grey and shows cloudy carsbald twining. Foliated Mica Schist with Muscovite mica dominant Description and observation of outcrop: In the cathode half-cell reduction takes place while in the anodic half-cell oxidation takes place. By Ian Alsop and Chris Kirkland. Examples include ore bodies, underground and overhead cables and buried pipelines. Lucky Adarighofua towards my life and educational pursuit, particularly this field work.
Pegmatite It is porphyritic with large clasts of orthoclase and quartz seen in tin section. Help Center Find new research papers in: On the western side of the area are the Quartzite ridges which are of lower elevation of about m maximum. Discrete element modeling of boudinage: This study igara on evaluating granite Artisanal and Small Scale Mining ASMwomen miner contribution, and the possibility of viable development particularly in Nigeria.
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Granite, pegmatite, Schist and Quartzite Litetature and observation of outcrop: Hornblende occurs as tiny round spot in thin section with it showing cleavage and black in colour. Biotite occurs as matrix with grey coloration.
This actually susbstantiate the fact that foliation and lineation planes are point of weakness which the stream capitalizes on. Mid-Niger Bida basin e.
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Average rainfall is between mm and mm with temperature as high as Slightly Migmatised to Unmigmatised paraschists and Metaconglomerate rocks 4. The region consist mainly of the continental, highly ferrogenised sandstone of the Lokoja-Bassange formation, which is overlain successively by the deltaic Mamu Formation and the fluvio-deltaic Ajali sandstone.
Generally, the study areas were accessible by roads major and minorand footpaths.
The widespread occurrence of joints and fractures observed in the rocks also resulted from stress due to Pan African orogenic episode. The dark colouration indicates its high organic content. It is quartz- arenite formation. The pegmatite dykes cut across both schist migmatised and unmigmatised. The associated dolerite dykes, syenite, pegmatite and undeformed rocks symbolize terminal stage of the Pan-African magmatism Evolution of mullion boudin structures in the variscan of the Ardennes and Eifel.
Biotite Granite A flowing stream along the road which links to outcrop 1 stream, with N igrara The pegmatite bodies and dykes are leucocratic in colour and are distinguished from other bodies which they occur together with by their colour.
Outcrop 2 N 70 As could be easily seen from the litholog, the sediments that formed the rock mass were deposited by different episodes of deposition. Aiyetoro GPS coordinate range: Revkew analyses were based on visual estimation and counting.
One the other hand, Okpekpe, Imeigba, Mamu formation, Ajali sandstone and the Bawa hill was also mapped are composed of sedimentary rocks. The veins in some cases are interlayered within the schist taking advantage of the ot planes.
Many subfacies recognized and include 1. The study area which is located between Lat. Quartz are colourless and show wavy extinction. Six samples each from Igarra and Otuo literafure selected and prepared into thin section for optical examination while fresh whole rock samples of the metaconglomerate were pulverized for X-ray diffraction analysis following standard method.
Ibarra Center Find new research papers in: II To train students to be able to recognize the various structural, textural and other geological features existing in rock. The Akata is believed to be of Eocene to Recent age.
Which implies that the rocks in these area have undergone metamorphism.