Library Portal | UWC Portal | National ETDs | Global ETDs
    • Login
    Contact Us | About Us | FAQs | Login
    View Item 
    •   DSpace Home
    • Faculty of Natural Sciences
    • Earth Sciences
    • Research Articles (Earth Sciences)
    • View Item
    •   DSpace Home
    • Faculty of Natural Sciences
    • Earth Sciences
    • Research Articles (Earth Sciences)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Biomarkers, stable carbon isotope, and trace element distribution of source rocks in the Orange Basin, South Africa: implications for paleoenvironmental reconstruction, provenance, and tectonic setting

    Thumbnail
    View/Open
    Biomarkers-stable-carbon-isotope-and-trace-element-distribution-of-source-rocks-in-the-Orange-Basin-South-Africa-implications-for-paleoenvironmental-reconstruction-provenance-and-tectonic-settingJournal-of-Petrole.pdf (2.796Mb)
    Date
    2021
    Author
    Yelwa, Nura A.
    Mustapha, Khairul A.
    Opuwari, Mimonitu
    Aziz, Azharuddin A.
    Metadata
    Show full item record
    Abstract
    Aptian to Campanian sediments from the Western ofshore to Central Orange Basin were studied by integrating molecular geochemistry, inorganic and isotopic studies to recognize their geochemical characteristics via the reconstruction of the Orange basin’s paleoweathering, paleosalinity, paleovegetation, paleoclimate, and tectonic records. Molecular analyses of both aliphatic and aromatic compounds reveal an input dominantly from a marine source. The source rocks accumulated in a reduced, anoxic, saline water column. Based on various biomarker proxies and vitrinite refectance data, some samples are thermally mature to produce petroleum, while others are not. According to the V/Ni ratio, samples from the Orange Basin in South Africa are mainly anoxic, with only a few samples ranging from suboxic to anoxic. This is congruent with biomarker and isotope analyses that further indicate the presence of marine-derived source rocks with some terrestrial remains gener ating hydrocarbons. The investigated sediments are made up of intermediate igneous rocks that have undergone moderate chemical weathering. Geochemical fgures on tectonic setting discriminant function diagrams revealed a continental rift of passive margin settings. As a result, the extrapolated crustal processes are directly analogous to the genesis and evolution of the Orange Basin, demonstrating Gondwana’s breaking up and the opening of the Atlantic Ocean Margin.
    URI
    https://doi.org/10.1007/s13202-021-01317-9
    http://hdl.handle.net/10566/7294
    Collections
    • Research Articles (Earth Sciences)

    DSpace 6.3 | Ubuntu | Copyright © University of the Western Cape
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    Statistics

    View Usage Statistics

    DSpace 6.3 | Ubuntu | Copyright © University of the Western Cape
    Contact Us | Send Feedback
    Theme by 
    Atmire NV