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References Acharya, B.C., Rao, D.S., Sahoo, R.K., & Dash, B. (1994). Phosphorous in the siliceous manganese ores of Nishikhal, Orissa. Indian Journal of Geology 66 (1),15-23. Acharya, B.C., Rao, D.S., & Sahoo, R.K. (1997). Mineralogy, chemistry and genesis of Nishikahl manganese ores of south Orissa, India. Mineralium Deposita 32 (1),79-93. Acharya, B.C., & Nayak, B.K. (1998). Mineral chemistry of manganese ores associated with Precambrian Eastern Ghats complex of Andhra Pradesh-Orissa, India. Journal of Mineralogy, Petrology and Economic Geology 93 (6), 214

-44. Carter, R.M., 1975. A discussion and classification of subaqueous mass-transport with particular application to grain-flow, slurry-flow, and fluxoturbidities. Earth Science Reviews 11, 145-177. Chamberlain, T.K., 1964. Mass transport of sediment in the heads of Scripps Submarine Canyon, California. [In:] R.L. Miller. (Ed.): Papers in Marine Geology, Macmillan, New York, 42-64. Chumakov, N.M., 1988. Riphean glacial deposits of the Baikal Mountain region and the problem of Upper Precambrian low-latitude glaciations. [In:] C.J.S. de Alvarenga (Ed.): Earth’s Glacial Record

°20′45.9″ and 4°20′58.8″ East. It has an undulating topography with an average elevation of 370 m above the mean sea level. Past studies [ 24 , 25 ] have identified the hydrogeology of Sub-Saharan African as represented in Nigeria into four provinces; the Precambrian basement rocks, volcanic rocks, unconsolidated sediments and consolidated sedimentary rocks. However, the province of the Precambrian basement is located on the study area, and it comprises crystalline and metamorphic rocks. Materials and Method Sample Collection Grain size analysis can be determined using

Introduction The Precambrian Basement Complex rocks of Akungba-Akoko area form a part of the south-western Nigerian Basement Complex ( Figure 1 ). The Nigerian Basement Complex lies within the reactivated Pan-African mobile belt extending between the West African Craton in the west and the Congo Craton in the south-east [ 1 , 2 ]. It comprises three major lithological units: the Migmatite–Gneiss Complex, the Schist Belts and the Older Granites, which intrude the former two units [ 3 ]. Figure 1 (a) Regional geological map of Nigeria within the Pan-African mobile

References Acharyya, S.K., Gupta, A. & Orihashi, Y., 2010. Neoarchaean- Palaeoproterozoic stratigraphy of the Dhanjori Basin, Singhbhum Craton, eastern India: and recording of a few U-Pb zircon dates from its basal part. Journal of Asian Earth Sciences 39, 527-536. Bhattacharya, H.N. & Mahapatra, S., 2008. Evolution of the Proterozoic rift margin sediments - North Singhbhum mobile belt, Jharkhand-Orissa, India. Precambrian Research 162, 365-386. Bhushan, S.K. & Sahoo, P., 2010. Geochemistry of clastic sediments from Sargar supracrustals and Bababudan Group

References Eriksson, P.G., Altermann, W., Nelson, D.R., Mueller, W.U. & Catuneanu, O. (Eds), 2004. The Precambrian earth: tempos and events. Developments in Precambrian Geology (Elsevier, Amsterdam) 12, 941 pp. Mazumder, R. & Saha, D. (Eds), 2012. Palaeoproterozoic of India. Geological Society, London, Special Publication 365, 294 pp. Naqvi, S.M. & Rogers, J.J.W., 1987. Precambrian geology of India. Oxford University Press (Oxford), 223 pp. Reddy, S.M., Mazumder, R., Evans, D.A.D. & Collins, A.S. (Eds), 2009. Palaeoproterozoic supercontinents and global evolution

References Alkaline rocks: Petrology, mineralogy and geochemistry. (2010). Programme. Abstracts. Excursion guide. Conference dedicated to the memory of J. A. Morozewicz, 19-21. September, 2010. Kyiv. Ukraine: Institute of geochemistry, mineralogy and ore formation M.P.Semenenko, NAS of Ukraine, 94. Balashov, Yu A., & Glaznev, V.N. (2006). Cycles of alkaline magmatism. Geochemistry, 3, 309-321 (in Russian). Blichert-Toft, J., Amdt, N.T., & Ludden, J.N. (1996). Precambrian alkaline magmatism. Lithos, 37, 97-111. DOI: 10.1016/0024-4937(95)00031-3. Brögger, W

] Oyawoye. M.O. (1964): The Geology of the Nigerian Basement Complex - A survey of our present knowledge of therm. Jour. Of Min.Geo.And Intel .; 1(2), pp. 87–193. [25] McCurry, P. (1976): T he Geology of Precambrian to lower Paleozoic rocks of Northern Nigeria - a review. In Kogbe C.A. (Ed). Elizabeth publication Co. Ibadan, Nigeria, pp. 15–38. [26] Rahman, M.A. (1988): Recent Advances in Study of the Basement Complex of Nigeria. In Precambrian Geology of Nigeria. Published by Geological Survey of Nigeria , Kaduna South, pp. 11–43 [27] National Population Commission

., Santosh, M. (1994): A tectonic perspective of incipient charnockites in East Gondwana. Precambrian Research , 66(1–4), pp. 379–392. 10.1016/0301-9268(94)90059-0 Yoshida M. Santosh M. 1994 A tectonic perspective of incipient charnockites in East Gondwana Precambrian Research 66 1–4 379 392 [16] Newton, R.C., Hansen, E.C. (1983): The origin of Proterozoic and late Archaean charnockites-evidence from field relations and experimental petrology. Geological Society of America Memorials , 161, pp. 167–178. 10.1130/MEM161-p167 Newton R.C. Hansen E.C. 1983 The origin of

of Demnate city. Tessaout means the planer in Berber due to the extraordinary erosion power of Tessaout River. However, it is a hidden valley despite its tourism potential, cultural heritage and its geodiversity which dates back to the Precambrian and is essential for understanding the history of central High-Atlas. The climate of the area is Mountainous-Mediterranean with wet and cold winters and heavy snowfalls followed by dry and hot summers ( HCWCD 2010 ). The snowfall period is from December to February, and the snow cover can reach more than 60 cm