APPLICATION OF GEOPHYSICAL METHODS TO DELINEATE KAOLIN DEPOSITS AND SURVEY FOR GROUND WATER POTENTIALITIES AT MINJIBIR, KANO STATE.
APPLICATION OF GEOPHYSICAL METHODS TO DELINEATE KAOLIN DEPOSITS AND SURVEY FOR GROUND WATER POTENTIALITIES AT MINJIBIR, KANO STATE.
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Date
1983-11
Authors
Aggarwai, Neelum
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Abstract
Three different geophysical methods namely
resistivity, self-potential (S.P.) and very low frequency
(V.L.F.) have been employed to delineate the extent of
kaolin deposits and explore possible places for
groundwater aquifers in the vicinity of Minjibir, Kano
State. A reconnaissance survey was carried out along
three long profiles, while detail work was done on a
200x400 m grid located in the vicinity of an existing
kaolin pit.
The detail resistivity survey results indicate a
three layer sub—strata with resistivities of 600 to
1,175 ohm meter for the first layer, 100 to 235 ohm m for the
middle layer and 2,400 XL-m and above for the third layer.
It shows a thickness varying from 1.1 to 1.7 m for the
top layer and 11.4 + 2.4 m to 21.7 ± 1.3 m for the
second layer. These results are in agreement with those
deduced from the V.L.F. detail survey and the available
borehole data of the survey area.
Using resistivity profiling and S.P. methods, the
extent of the kaolin deposit was delineated and its
total mass was estimated to be around 1.7 ± 0 . 2 million
tons. Two prospective places to drill boreholes for
water supply have been suggested based on the results of
the V.L.F., S.P., and resistivity surveys. The results
of mechanical analysis of the top soils have been
correlated with the heights of the sampling points.
Silt and coarse sand provides the highest multiple
correlation factor, approximately 0.6 with height, which
indicates that the upper most layers are composed of
coarse sand covered by silt.
Description
A thesis submitted to the Postgraduate School,
Ahmadu Bello University, in partial fulfillment
of the requirements for the degree of
Masters of Science in Applied Geophysics.
Department of Physics,
Faculty of Science,
Ahmadu Bello University, Zaria,
November, 1983.
Keywords
APPLICATION,, GEOPHYSICAL,, METHODS,, DELINEATE,, KAOLINITE,, DEPOSITS,, SURVEY,, GROUND,, WATER,, POTENTIALITIES,, MINJIBIR,, KANO STATE.