Depositional systems and geochemistry of the kavirondian sedimentary rocks in the late archaeannzega greenstone belt, Tanzania

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dc.contributor.authorMtelela, Cassy
dc.date.accessioned2019-11-19T09:32:48Z
dc.date.accessioned2020-01-07T15:45:50Z
dc.date.available2019-11-19T09:32:48Z
dc.date.available2020-01-07T15:45:50Z
dc.date.issued2010
dc.descriptionAvailable in print form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF QE571.T34M23)en_US
dc.description.abstractThis study deals with unraveling the depositional and tectonic evolution of the Kavirondian sedimentary rocks of the Nzega Greenstone Belt (NGB), Tanzania. This study uses a number of research methods, which includes; i) Detailed geological mapping ii) Petrographical and geochemical investigations of the collected rock samples and iii) Inspections of diamond drill-cores against gold assay results to understand gold mineralization processes in Kavirondian sedimentary rocks. The Kavirondian sedimentary rocks in the NGB define a fault controlled basin with intrabasinal topography probably associated with intrabasinal faulting, unconformablyoverlie Nyanzian rocks. Based on lithofacies association, stratigraphy and palaeocurrent data, five end-member depositional systems have been identified, namely; the Chomachankola System, the Usenge conglomerate System, the Hop Hill sandstone System, the Shoga sandstone System, and the Mapagale sandstone- dominated System. The Chomachankola System is interpreted as a canyon-filled high energy proximal System. Petrography and geochemical studies reveals a proximal heterogeneous source rocks for the conglomerate rocks, ranging from mafic to felsic rocks and chemical sedimentary rocks (BIF/chert), and a granitic source rocks for the sandstones, and deposition on a passive continental margin. Furthermore, the study indicates a structural-controlled epigenetic gold mineralization within strongly chlorite- sericite and haematite-altered sandstone and conglomerate sequences at Resolute’sKavsav Gold Project. The study recommends further drilling in the area to determine the size of the depositen_US
dc.identifier.citationMtelela, C. (2010) Depositional systems and geochemistry of the kavirondian sedimentary rocks in the late archaeannzega greenstone belt, Tanzania, Master dissertation, University of Dar es Salaam, Dar es Salaamen_US
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/1758
dc.language.isoenen_US
dc.publisherUnversity of Dar es Salaamen_US
dc.subjectSedimentation and depositionen_US
dc.subjectGeochemistryen_US
dc.subjectTectonics (Geologyen_US
dc.subjectKavirondian sedimentary rocksen_US
dc.subjectNzega greenstone belten_US
dc.subjectTanzaniaen_US
dc.titleDepositional systems and geochemistry of the kavirondian sedimentary rocks in the late archaeannzega greenstone belt, Tanzaniaen_US
dc.typeThesisen_US

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