GEOLOGY, GEOCHEMISTRY AND PETROGENESIS OF BIRNIN KUDU YOUNGER GRANITE COMPLEX, NW NIGERIA

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dc.contributor.authorABUBAKAR, Usman
dc.date.accessioned2019-04-08T13:45:56Z
dc.date.available2019-04-08T13:45:56Z
dc.date.issued2018-02
dc.descriptionA THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN GEOLOGY DEPARTMENT OF GEOLOGY AHMADU BELLO UNIVERSITY, ZARIA, NIGERIAen_US
dc.description.abstractThe distinctive petrological, mineralogical and geochemical features of theBirnin Kudu Complex are of great economic values which makes them attractive targets for petrological research. The study area lies between latitude 11024'56" and 11027'30" N, longitude 9026'30" and 9030'46" E was mapped in detail and a geological map produced on a scale of 1:25, 000. The rocks in the study area are post-orogenic granite emplaced within plate.Fifteen rock samples were used for both petrographic and geochemical analyses. Petrographic and field studies revealed that the area is underlain by three major rock types namely: granophyre (35%), rhyolite (40%) and crystal-rich ignimbrite (25%)all of which are surrounded by hornblende biotite granite. Petrographic studies revealed that quartz and K-feldspars are the dominant constituent minerals of these rocks. The rocks of the Birnin Kudu Complex are relatively enriched in LREE and depleted in HREE. Furthermore, the REE patternsexhibit prominent negative Eu-anomaly.The constituent rocks of the Birnin Kudu Complex are metaluminous, which is a characteristic feature of A-type granites. Discrimination on the basis of Fe-index indicates that the rocks are ferroan, with typical A-type signatures.The rhyolites can be interpreted to be derived from magma sourced from the enriched mantle, this enrichment may have occurred during an earlier period of subduction. The granophyres and the crystal-rich ignimbrites were interpreted to be derived from the interaction of earlier derived magma with the crust, leading to the continental margin trace element signatures.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/11465
dc.language.isoenen_US
dc.subjectGEOLOGY,en_US
dc.subjectGEOCHEMISTRY,en_US
dc.subjectPETROGENESIS,en_US
dc.subjectBIRNIN KUDU YOUNGER GRANITE COMPLEX,en_US
dc.subjectNIGERIA,en_US
dc.titleGEOLOGY, GEOCHEMISTRY AND PETROGENESIS OF BIRNIN KUDU YOUNGER GRANITE COMPLEX, NW NIGERIAen_US
dc.typeThesisen_US
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