A REVIEW OF THE STRUCTURE AND PETROLOGY OF THE KUDARU RING COMPLEX

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dc.contributor.authorADAMU, BAKO MUHAMMAD
dc.date.accessioned2014-02-05T12:20:03Z
dc.date.available2014-02-05T12:20:03Z
dc.date.issued1980-06
dc.descriptionA THESIS SUBMITTED TO THE DEPARTMENT OF GEOLOGY, AHMADU BELLO UNIVERSITY, ZARIA, AS PARTIAL FULFILLMENT FOR THE AWARD OF A BACHELOR OF SCIENCE DEGREE IN GEOLOGYen_US
dc.description.abstractThe geological map of Kudaru complex has a characteristically elliptical ring-dyke structure already described by earlier workers. Hocks on this complex consist mostly of alkali granites and their subvolcanic and volcanic equivalents. The major rock types ares Quartz porphyry, granite porphyry, fayalita granite, Biotite and Biotite granite and rhyolites. Contrary to the assumption that the ring dyke is made up of one rock type, it has been confirmed in the field and on the microscope that the ring dyke is made up of two rock types namely the quartz porphyry and the granite porphyry. The cone-sheets can be divided into three major petrological units? - The granite porphyry - Fine grained riebeckite granite - Rhyolite. The southward displacement of the 'central1 pluton beyond the confines of the ring-dyke has important implications which include: 1. A southward shift in the centre of magmatic activities analogous to the already well documented migration of ring-complexes in the Niger-Nigeria Younger Granite Province. 2. Hydrothermal alteration of the rock (notably the granite porphyry ring dyke) in contact with the displaced granite. The presence of extrusive volcanic rock is reported by the writer and its apparently small size is most probably a result of erosional activity which must have eroded a large portion of the rock during geological time. The presence of this rock also helps to suggest that the ring dyke was emplaced by the process of surface cauldron subsidence, a process which Bain (1934) was unable to suggest.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/345
dc.language.isoenen_US
dc.subjectREVIEW,en_US
dc.subjectSTRUCTURE,en_US
dc.subjectPETROLOGY,en_US
dc.subjectKUDARU,en_US
dc.subjectRING,en_US
dc.subjectCOMPLEXen_US
dc.titleA REVIEW OF THE STRUCTURE AND PETROLOGY OF THE KUDARU RING COMPLEXen_US
dc.typeThesisen_US
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