A THREE-DIMENSIONAL INTERPRETATION OF THE BOUGUER ANOMALIES OVER THE MINNA BATHOLITH IN NIGER STATE

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dc.contributor.authorUDENSI, EMMANUEL EMEKA
dc.date.accessioned2014-02-03T10:09:44Z
dc.date.available2014-02-03T10:09:44Z
dc.date.issued1985-07
dc.descriptionA THESIS Submitted in partial fulfilment of the requirements for the degree of Master of Science, Applied Geophysics. Department of physics Ahmadu Bello University, ZARIAen_US
dc.description.abstractABSTRACT A gravity survey over the Older Granite intrusion of the Minna Area in Nigeria shows that the area is characterized by a prominent residual gravity low of -21 mGal relative to a northeast-southwest trending regional anomaly. Three-dimensional modelling of the residual gravity indicates that the floor of the Older Granite suite is, in general, located at a depth of 5 km, and that the walls of the suite may be inward dipping Prominent plugs extend to 8-14 km depth locally in three regions. The general size of the modelled bodies and pattern of the anomalies suggest that the granite suite is a batholith which was magmatically emplaced with the three plugs acting as conduits for the ascent of magma. The modelling also suggests that the contacts of the granite suite with the flanking Birnin Gwari and Kushaka Schists Formations are steep and that the maximum thicknesses of these formations are 11 and 6.5 km respectively with parts of the Kushaka formation underlain by the granite suite below depths of 1.8 km.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/66
dc.language.isoenen_US
dc.subjectTHREE-DIMENSIONAL,en_US
dc.subjectINTERPRETATION,en_US
dc.subjectBOUGUER,en_US
dc.subjectANOMALIES,en_US
dc.subjectMINNA,en_US
dc.subjectBATHOLITH,en_US
dc.subjectNIGER STATE.en_US
dc.titleA THREE-DIMENSIONAL INTERPRETATION OF THE BOUGUER ANOMALIES OVER THE MINNA BATHOLITH IN NIGER STATEen_US
dc.typeThesisen_US
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