CORRELATION OF SEISMIC SECTION WITH GEOLOGIC BOREHOLE LOGS IN SOME STUDENT HOSTELS AT AHMADU BELLO UNIVERSITY (MAIN CAMPUS), ZARIA, KADUNA STATE

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OSUMEJE JOSEPH OROJAH.pdf(5.22 MB)
Date
2008-03
Authors
OSUMEJE, JOSEPH OROJAH
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Abstract
Ahmadu Bcllo University is located in Zaria in the north-central part of the Nigerian basement complex. Zaria is situated in the Sudan Savannah area of the country. The aim of this Geophysical survey is to investigate the subsurface structure of the earth around some student hostels in the main campus of the university by correlating a borehole log with a generated seismic section. The objectives include; the determination of the nature and texture of the strata underlying the hostel buildings, the determination of the depth to fresh basement and the determination of the topography of the basement. Seismic refraction tomography methods was used for this investigation. A total of eight profiles were taken around four hostels, with the boreholes at the centre of the each spread. A total of about 120m spread was laid in a straight line with each geophone placed at 5m interval. The seismic data collected were processed using the REFLEX W software. From the processed data, the result shows a depth to fresh basement at about 24m deep around the survey area, which is undulating. The subsurface varies in texture from line to medium and coarse grain size, with clay dominating the weathered basement. This gives reason for the sinking and cracking of some structures within the survey area.
Description
A RESEARCH THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA, IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTERS DEGREE IN APPLIED GEOPHYSICS, DEPARTMENT OF PHYSICS. FACULTY OF SCIENCE, AHMADU BELLO UNIVERSITY, ZARIA
Keywords
CORRELATION,, SEISMIC,, GEOLOGIC BOREHOLE ,, STUDENT HOSTEL
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http://hdl.handle.net/123456789/6798
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SCIENCE