Sedimentologic and paleocurrent analysis of the early triassic strata in the Ruhuhu basin, Tanzania

dc.contributor.authorSyprian, Audax
dc.date.accessioned2019-03-08T08:05:14Z
dc.date.available2019-03-08T08:05:14Z
dc.date.issued2017
dc.descriptionDissertation (MSc Petroleum Geoscience)en_US
dc.description.abstractRuhuhu basin has eight informal lithostratigraphic units, termed the K1 to K8. This research was conducted at Lifua Member (formally K8). The beds are of Early Triassic and are the youngest stratigraphic unit of the Karoo strata in the Ruhuhu Basin. This research applies sedimentology and paleocurrent analysis of the early Triassic strata in interpreting provenance, shape and orientation and reconstructing palaeogeography of this unit. It involved description, measurements and sampling of the rocks from the outcrops as well as grain size analysis, geochemistry and petrographic studies. Based on the present study, about five lithofacies were identified namely Massive matrix supported para-conglomerate (Gmm), Massive sandstone(Sm), Parallel-horizontal lamination (Sh), Planar cross beds (Sp) and fine silt, mud and clay (Fl). Most of the sandstone exhibited normal grading caused by a decrease in energy of the river current. Grain size analysis indicates that sandstone is moderately sorted, finely skewed, mesokurtic and that most of the grains are silty sand. This two suggestfluviatile dominated by sand channel deposition environment. Grain size analysis and petrography classified the sandstone as sublitharenite and chemically as ferruginous quartzose. The maturity level is from sub-mature to mature sediments, which suggest the source area was of low relief and warm, humid climate where chemical weathering was moderately intense. Geochemistry and Heavy mineral suit suggested basic igneous rock as the provenance of the sandstone. Paleocurrent was from NW towards SE, although some were also from the various localized area. The shape of the basin is elongated NE/SW. Based on the observations, Lifua Member has a good reservoir rock due to the dominant mode of channel deposit and textural characteristics of the sandstone.en_US
dc.identifier.citationSyprian, A. (2017). Sedimentologic and paleocurrent analysis of the early triassic strata in the Ruhuhu basin, Tanzania. Dodoma: The Univesity of Dodomaen_US
dc.identifier.urihttp://hdl.handle.net/20.500.12661/589
dc.language.isoenen_US
dc.publisherThe University of Dodomaen_US
dc.subjectRuhuhuen_US
dc.subjectPetrographicen_US
dc.subjectMineralen_US
dc.subjectEnvironmenten_US
dc.subjectSedimentologyen_US
dc.subjectTanzaniaen_US
dc.subjectPaleocurrenten_US
dc.subjectTriassic strataen_US
dc.subjectRocksen_US
dc.subjectPaleogeographyen_US
dc.subjectGeochemistryen_US
dc.subjectStratigraphicen_US
dc.subjectLithostratigraphicen_US
dc.titleSedimentologic and paleocurrent analysis of the early triassic strata in the Ruhuhu basin, Tanzaniaen_US
dc.typeDissertationen_US
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