Geologic settings and petrographic analysis of uding granitic hills and environs part of Hawal Massif North Eastern Nigeria
- 1Department of Geology, Modibbo Adama University of Technology, Yola. Adamawa State, Nigeria
- 2Department of Geology, Modibbo Adama University of Technology, Yola. Adamawa State, Nigeria
Int. Res. J. Earth Sci., Volume 5, Issue (6), Pages 1-7, July,25 (2017)
The Uding granites are situated in the Hong area of Adamawa state, where the Hawal massif clearly defined the geologic unit. Hawal massif is the name given to the basement complex rocks of Northeastern Nigeria. The granite is underlain by 300-400m of intensely metamorphosed rocks of the earlier Precambrian – the migmatite-gneiss. Field mapping was carried out on a scale of 1:25,000, traversing the area was challenging due to the natural stationing of smooth surfaced hills of batholithic granite. Field observation shows that the hills are mainly coarse-grained massive granitic batholith, with no observable evidence of metamorphism. Opened cracks and joints have also been observed, with no sealing. Evidence of high-grade metamorphism as schistocity and bandings were conspicuously absent. Elsewhere at the lowermost parts of some hills, particularly the Northwestern part of the study area near Pella, fabrics of metamorphic facie were encountered, signifying onset of metamorphism. There, the porphyritic texture of the granite hills were deformed and obliterated. Mineral assemblages obtained from petrographic studies confirm the rocks to be chiefly biotite-granite with accessory minerals as muscovite, zircon and hornblende. Exclusively metamorphic minerals have not been observed in the thin section studied both under plane polarized and cross-polarized lights. Both field and mineralogical evidences obtained in this study indicated that the Udinggranitic hills have not been transformed, hence remained as differentiated part of the basement complex of northeastern Nigeria, the Hawal massif.
- Daral H. (1991)., Michika Master Plan Draft., Final Report, Ministry of Land and Survey, Gongola State, 1.
- Matthew O.O. and Emmanuel Igonor E. (2013)., Solid Minerals Development In Part Of Southwest Nigeria - In The Light Of Recent Reforms., British Journal Of Applied Sciences & Technology, 3(4), 1391-1404.
- Schluter T. (2006)., Sao Tome and Principe., Geological atlas of Africa, Berlin: Springer, 192-193.
- Falconer J.D. (1911)., The Geology and Geography of Northern Nigeria., Macmillan London, 295, 1911. Universal Journal of Geoscience, 2(3), 93-103.
- Obaje N.G. (2009)., Geology and Mineral Resources of Nigeria., Berlin: Springer.
- Obiora S.C. and Ukaegbu V.U. (2009)., Petrology And Geochemical Characteristics Of Precambrian granitic basement complex rocks in the southernmost part of North-Central Nigeria., Chin.J.Geochem., 28(4), 377-385. DOI: 10.1007/s11631-009-0377-2
- Rahaman M.A. (1988)., Recent Advances in study of the Basement Complex of Nigeria., Precambrian geology of Nigeria. In: Oluyide, P.O. et al., (eds) Precambrian Geology of Nigeria. Geological Survey of Nigeria Publication, Kaduna, 11-41.
- Dada S.S. (2006)., Proterozoic evolution of Nigeria., In O. Oshi (Ed.), The basement complex of Nigeria and its mineral resources (A tribute to Prof. M.A.O. Rahaman).Akin Jinad & Co. Ibadan, 29-44.
- Caby R. (1989)., Precambrian terranes of Benin–Nigeria and Northeast Brazil and the Late Proterozoic South Atlantic fit., Geological Society America Special Paper, 230, 145-158.
- Fitches W.R., Ajibade A.C., Egbuniwe I.G., Hole R.W. and Wright J.B. (1985)., Late Proterozoic Schist belts and Plutonism in NW Nigeria., Journal Geological Society London, 142, 319-337.
- Ajibade A.C., Woakes M. and Rahaman M.A. (1987)., Proterozoic crustal development in the Pan – African regime of Nigeria., American Geophysical Journal, 259- 271.
- Rahaman M.A., Emofurieta W.O. and Vanchette M.C. (1983)., The potassic granites of Igbetti area: further evidence of the poly cyclic evolution of the Pan-African belt in SW Nigeria., Precambrian Research, 22, 75-92.
- Umeji A.C. and Caen-Vachette M. (1984)., Geochronology of Pan-African Nassarawa Eggon and Mkar-Gboko granites, southeast Nigeria., Precambrian Res., 23(3-4), 317-324. http://dx.doi.org/10.1016/0301-9268 (84) 90048-2
- Ekwueme B.N. and Kroner A. (1998)., Single Zircon evaporation ages from the Oban Massif, Southeastern Nigeria., J. Afri. Earth Sci., 26(2), 195-205.
- Annor A.E. (1995)., U-Pb zircon age for Kabba-Okenegranodiorite gneiss: implication for Nigeria’s basement Chronology., African Geoscience Review, 2, 101-105.
- Okonkwo C.T. and Winchester J.A. (2004)., Geochemistry of granitic rocks in Jebba area, southwestern Nigeria., Journal of Mining and Geology, 40(2), 95-100.
- Haruna I.V. (2014)., Petrology and Geochemistry of Granitoids of the Northern Part of Adamawa Massif, N.E Nigeria., J Geol Geosci, 3, 177. doi:10.4172/2329-6755. 1000177
- Baba S. (2009)., Geology of Madagali area, Hawal Massif, N.E Nigeria., Unpubl. PhD Thesis, Federal University of Technology, Yola
- Bassey N.E. (2007)., Brittle deformational features of Michika area, Hawal Basement complex, N.E. Nigeria., Global Journal of Geological Sciences, 5(1), 51-54.