Petrology and geochemical characteristics of Precambrian granitic basement complex rocks in the southernmost part of North-Central Nigeria

2009 ◽  
Vol 28 (4) ◽  
pp. 377-385 ◽  
Author(s):  
S. C. Obiora ◽  
V. U. Ukaegbu
Keyword(s):  
Geochemical Characteristics ◽  
Basement Complex ◽  
North Central

scholarly journals Assessment of the Leachate Contamination Level of Groundwater Resource at a Dumpsite, In Minna, North Central, Nigeria Using Resistivity Method

2019 ◽  
Vol 4 (2) ◽  
pp. 116
Author(s):  
Priscillia Egbelelulu ◽  
Taiwo Adewumi ◽  
Emmanuel Emeka Udensi ◽  
Naeem Abdulsalam ◽  
Oke Israel Okwokwo
Keyword(s):  
Research Work ◽  
Control Site ◽  
Vertical Electrical Sounding ◽  
Contamination Level ◽  
Basement Complex ◽  
North Central ◽  
Contaminant Plumes ◽  
Resistivity Method ◽  
Electrical Sounding ◽  
Analyse Data

This research work focused on the use of direct current resistivity method to analyse data collected from refuse dumpsite at eastern bye pass Minna. The study area lies approximately on longitude 60 36’19.84”E to 6036’23.15”E and latitude 90 38’04.97”N to 9038’08.25”N, with a dimension of 100m x 100m within the basement complex of north central Nigeria. Vertical Electrical Sounding was carried out on the dumpsite with the aim of delineating the leachate contaminant plumes using resistivity method. Nine electrical resistivity profiles were measured on the site. Six transverse profiles were conducted on the dumpsite with thirty-six vertical electrical sounding (VES) point, three transverse profiles was also conducted on the control site which is 100 meters away from the dumpsite having nine vertical electrical sounding (VES) point and a dimension of 40m x 40m. The resistivity data obtained was analyzed using winresist software. The data obtained from the study area revealed three underlain layer they are the topsoil, fractured basement and fresh basement. The dumpsite was typified by A-types and H-types of curve and the control site was typified by H-type of curves. Iso–resistivity maps at various depths were observed, at the surface, 3m, 5m,7m, and 10m for the dumpsite and the control site. It can therefore be inferred from this study that the depth of contamination is 7 meter and aquifer found within this depth are most likely to be contaminated by leachate and water bearing formation beyond the depth of 7m is safe from contamination. The rate of contamination of the study area is approximately 1.0 meter per year.

scholarly journals A Reconnainsances Study to Delianate Conductive Groundwater Zone Using Resistivity Sounding in Some Part of Kwara State North-Central, Nigeria

2020 ◽  
Vol 12 (2) ◽  
pp. 57
Author(s):  
S. Adamu ◽  
A. K. Yusuf ◽  
A.G. Kodomi ◽  
I. B. Wulo
Keyword(s):  
Electrode Spacing ◽  
Positioning System ◽  
Basement Rock ◽  
Basement Complex ◽  
North Central ◽  
Resistivity Sounding ◽  
Conductive Zone ◽  
Top Soil ◽  
Groundwater Supply ◽  
Granite Suite

From the results, three to four electrostratigraphic layers with resistivity value ranging from 44 to 997 ohm/m and thickness ranging from 0.5 to 39.7 m were observed in the study area. The top loose rocks, the weathered conductive zone, the fractured basement rock and the fresh basement rock of older granite suite were encountered respectively. From this research, it can be deduce that, the thicker top soil and deeper weathered basement rock at the depth of 30 to 45 meters within this area produce a productive site for sitting future borehole. Insufficient groundwater supply in some places leading to scarcity is noticed in VES 10, VES 12 and VES 13. H, I, and A curve types are generally the most common in the area and are typical of basement complex area. Geographical Positioning System tool (model: GPSmap 76CSx), was used to locate the VES points. Fifteen VES points with electrode spacing [AB/2] of 100 meters separation around Ndanaku and environs were undertaken using Schlumberger configuration. IPI 2 Win [1990-2003] Geosoft resistivity sounding software was used to model the field curves from the measured data on the field. Groundwater in the area is regarded as poor due to localized nature of the aquifer and the study aimed at addressing this scarcity of water within the area by studying the conductive zone and knows the aquifer types through resistivity sounding techniques for future drilling.

Palygorskite genesis through silicate transformation in Tunisian continental Eocene deposits

Clay Minerals ◽  
2003 ◽  
Vol 38 (2) ◽  
pp. 187-199 ◽  
Author(s):  
F. Jamoussi ◽  
A. Ben Aboud ◽  
A. López-Galindo
Keyword(s):  
Rare Earth ◽  
Chemical Composition ◽  
Rare Earth Elements ◽  
Clay Fraction ◽  
Geochemical Characteristics ◽  
North Central ◽  
Textural Characteristics ◽  
Central Tunisia ◽  
South Central

AbstractThe mineralogical and geochemical characteristics of Eocene continental sediments in south central Tunisia (Chebket Bouloufa and Jebel Hamri) and in north central Tunisia (Jebel Lessouda and Jebel Rhéouis), which contain considerable amounts of palygorskite, were studied. The clay fraction of the sediments also comprises illite, kaolinite, Mg smectite and Al smectite, together with carbonates (calcite and/or dolomite), quartz, gypsum and feldspars, all of which are present in extremely variable proportions.The textural characteristics of the samples containing most palygorskite, as well as the chemical composition of the fibres and the contents of certain trace and rare earth elements suggest that the genesis of this fibrous clay is intimately linked to the diagenetic transformation of illite, mixedlayered minerals and/or Al smectite, as has also been observed in contemporaneous deposits in Morocco.

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