scholarly journals Characterization and agricultural potentials of some pedons derived from sand stone parent rock near Abeokuta, Southwestern Nigeria

2019 ◽  
Vol 10 (6) ◽  
pp. 82-93
Author(s):  
J. R. Orimoloye ◽  
K. A. S. Amadi-Rapheal ◽  
G. E. Akinbola
Keyword(s):  
Parent Rock ◽  
Southwestern Nigeria

scholarly journals MOBILITY AND REDISTRIBUTION OF MAJOR ELEMENTS IN WEATHERED PROFILE DEVELOPED ON PEGMATITE AT KITIBI-IWOYE, SOUTHWESTERN NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 59-64
Author(s):  
Jimoh, M.T. ◽  
Bolarinwa, A.T ◽  
T. O. Kolawole
Keyword(s):  
Major Elements ◽  
Geological Mapping ◽  
Parent Rock ◽  
Southwestern Nigeria ◽  
Mass Balance Calculation ◽  
Chemical Index ◽  
Chemical Index Of Alteration ◽  
Geological Sciences ◽  
Geochemical Studies ◽  
University Of Cape Town

Geochemical studies of weathering profiles around Kitibi-Iwoye revealed redistribution of elements from parental pegmatite to the regolith. Geological mapping showed that the pegmatite intrudes diorite and migmatite gneiss. Weathered samples from B-horizon were air-dried, pulverised and analysed using X-ray Fluorescence Spectrometry (XRF) in the Department of Geological Sciences, University of Cape Town, South Africa. Chemical Index of Alteration (CIA), Weathering Index of Parker (WIP), Mass balance calculation and Al2O3 – CaO+Na2O – K2O (A–CN–K) ternary plot were employed to determine elemental mobility and distribution caused by weathering. SiO₂ (74.2 and 43.4 wt %), CaO (0.43 and 0.03 wt. %), Na2O (7.14 and 0.04 wt. %), K2O (1.90 and 0.67 wt. %), MnO (0.11 and 0.03 wt. %) and P2O5 (0.20 and 0.05wt. %) displayed depletion from parent rock to the regolith respectively. But Al₂O₃ (15.5 wt. % and 33.5 wt. %), Fe2O3 (0.39 and 3.40 wt. %), TiO2 (0.04 and 0.35 wt. %) and MgO (0.08 and 0.11 wt. %) showed enrichment from parent rock to the regolith respectively. Fe₂O₃ (3.19) is the most enriched whereas Na2O (-99.8), CaO (-98.9), P2O5 (-95.3), K2O (-89.5), SiO2 (-81.9), MgO (-73.1), MnO (-64.5) and Al2O3 (-23.6) are progressively depleted. Mean CIA value of 97.8 revealed that weathering has almost reached its completion whereas CIA of 62.1 for the pegmatite suggested that the parent rock is at incipient stage of weathering. Pegmatite had a WIP of 110.5 whereas the weathered samples with WIP ranging from 2.66, 3.88, 6.03, 6.23, 6.92, 8.08, 9.08, 9.76 and 14.6 respectively showed decreasing trend of weathering. This study confirmed contrasting behaviour of CIA and WIP. A-CN-K diagram suggested strongly weathered samples plotted at the apex of Al2O3 field whereas pegmatite plots along the A-CN line.

Islam and Colonial Rule in Lagos

1995 ◽  
Vol 12 (1) ◽  
pp. 66-80
Author(s):  
Olakunle A. Lawal
Keyword(s):  
Twentieth Century ◽  
Colonial Rule ◽  
Muslim Community ◽  
Tropical Africa ◽  
Southwestern Nigeria ◽  
Urban Settlement ◽  
Islam And Politics ◽  
British Rule ◽  
History Of ◽  
Process Of Urbanization

IntroductionThis essay provides an explanation of the dynamics of the interactionbetween Islam and politics by placing emphasis on the role played byMuslims in the collision of traditionalism and British rule as colonialismtook root in Lagos. The focus is on the development of a political schismwithin the nascent Muslim community of metropolitan Lagos at the startof the twentieth century up until the end of the 1940s. It highlights therole of Islam in an emerging urban settlement experiencing rapid transformationfrom a purely rural and traditional center into a colonial urbancenter. The essay is located within the broader issues of urban change andtransition in twentieth-century tropical Africa. Three major developments(viz: the central mosque crisis, the Eleko affair, and the Oluwa land case)are used as the vehicles through which the objectives of the essay areachieved.The introduction of Islam into Lagos has been studied by T. G. O.Gbadamosi as part of the history of Islam in southwestern Nigeria. Thisepic study does not pay specific attention to Lagos, devoted as it is to thegrowth of Islam in a far-flung territory like the whole of modem southwesternNigeria. His contribution to a collection of essays on the historyof Lagos curiously leaves out Islam’s phenomenal impact on Lagosianpolitics during the first half of the twentieth century. In an attempt to fillthis gap, Hakeem Danmole’s essay also stops short of appreciating the fundamentallink between the process of urbanization, symbolized in this caseby colonial rule, and the vanguard role played by Muslims in the inevitableclash of tradition and colonial rule in Lagos between 1900 and 1950.

Assessment of Premarital Haemoglobin Genotype Counselling in the Control of Haemoglobinopathies in Osogbo, Southwestern Nigeria

2017 ◽  
Vol 4 (2) ◽  
pp. 81-85
Author(s):  
Igbeneghu C ◽  
◽  
Olisekodiaka M.J ◽  
Akinsehinwa T.N ◽  
Okanlawon B.M ◽  
...  
Keyword(s):  
Southwestern Nigeria
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