STRATIGRAPHY AND STRUCTURE OF BASHAR AREA, NORTHEAST NIGERIA

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dc.contributor.authorMORU, OYIZA OMOLOLA
dc.date.accessioned2014-03-19T08:00:13Z
dc.date.available2014-03-19T08:00:13Z
dc.date.issued2010-07
dc.descriptionA THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU BELLO UNIVERSITY, ZARIA NIGERIA. IN PARTIAL FULFILLMENT FOR THE AWARD OF MASTER OF SCIENCE IN GEOLOGY DEPARTMENT OF GEOLOGY AHMADU BELLO UNIVERSITY, ZARIA NIGERIA.en_US
dc.description.abstractThe project concerns the stratigraphy and structure of the Bashar area situated in both Dengi and Wase Local Government Areas of Plateau State. Early Cretaceous rifting was accompanied by faulting which gave rise to the Garga extensional fault which controlled the deposition of the Bima Group; this was followed by a thermo tectonic sag stage of basin development accompanied by the deposition of the marine Yolde Formation. Synsedimentary tectonics which continued into the Cenomanian affected the Yolde Formation giving rise to an unconformity within the Yolde Formation. Santonian to Campanian compressioanl events are recognizable in the Yolde and Pindiga Formations which were accompanied by the eruption of lava on the latter. Late Campanian to Maastrichtian renewed rifting led to the deposition of the Gombe Formation above the Pindiga Formation. Late Cretaceous to early Paloegene compressional events, accompanied by faulting are recognizable in the Gombe Formation by the presence of the thrust/reverse Garga fault and the “Gwangen” anticline and “Gir” syncline. This second episode of compressional events affected the pre-Santonian beds, effect is most evident in the tightness of the Yolde Formation. The Bashar area compared to elsewhere in the Upper Benue Trough has a marked angular unconformity between the Pindiga/Gombe contact and the Gombe Formation here is made up of a two main facies namely: the lower pebbly sand which is indicative of a braided river deposit (braided bar) and an upper “red sandstone” facies indicative of downstream migration of the braided bar deposit. These sandstones around Bashar can be interpreted as a fining-upward deltaic-like deposit prograding toward the north.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4005
dc.language.isoenen_US
dc.subjectSTRATIGRAPHY,en_US
dc.subjectSTRUCTURE,en_US
dc.subjectBASHAR AREA,en_US
dc.subjectNORTHEAST,en_US
dc.subjectNIGERIAen_US
dc.titleSTRATIGRAPHY AND STRUCTURE OF BASHAR AREA, NORTHEAST NIGERIAen_US
dc.typeThesisen_US
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