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- W2125678245 abstract "Research Article| March 01, 2002 Sedimentology of the Beaufort-Molteno Karoo fluvial strata in the Tuli Basin, South Africa Emese M. Bordy; Emese M. Bordy Rhodes University, Department of Geology, Grahamstown 6140, South Africa., e-mail: emese_bordy@yahoo.com Search for other works by this author on: GSW Google Scholar Octavian Catuneanu Octavian Catuneanu University of Alberta, Department of Earth and Atmospheric Sciences, 1-26 Earth Sciences Building, Edmonton, Alberta T6G 2E3, Canada., e-mail: octavian@ualberta.ca Search for other works by this author on: GSW Google Scholar South African Journal of Geology (2002) 105 (1): 51–66. https://doi.org/10.2113/1050051 Article history first online: 07 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Emese M. Bordy, Octavian Catuneanu; Sedimentology of the Beaufort-Molteno Karoo fluvial strata in the Tuli Basin, South Africa. South African Journal of Geology 2002;; 105 (1): 51–66. doi: https://doi.org/10.2113/1050051 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySouth African Journal of Geology Search Advanced Search Abstract The sedimentary rocks of the Karoo Supergroup in the Tuli Basin (South Africa) may be grouped into four stratigraphic units: the Basal, Middle and Upper units, and the Clarens Formation. This paper presents the findings of the sedimentological investigation of the fluvial clastic deposits of the Middle Unit. The lack of bio- and chronostratigraphic control hampers an unequivocal correlation of the Middle Unit with the formations of the main Karoo Basin. Existing constraints place the Middle Unit in a stratigraphic position older than the Elliot Formation and younger than the Ecca Group. Between these limits, the Middle Unit may correlate with either the Beaufort Group or the Molteno Formation of the main Karoo Basin (Table 11).The Middle Unit may be subdivided into three parts, based on lithological differences. The lower part includes rudites and arenites (lithofacies Gh, Sp, Sh, and Sm); the middle part is dominated by siltstones and very fine sandstones (lithofacies Fl); and the upper part consists of mudstones (lithofacies Fsm). This succession accumulated in a perennial braided fluvial system, with well developed inter-channel flood plains. The observed lithofacies and architectural elements are partly coeval, with the overall upward-fining profile related to gradual denudation and peneplanation. Petrographic analyses indicate multiple source areas, as well as reworking of the underlying Basal Unit. The accumulation of the Middle Unit in the Tuli Basin corresponds to a distinct stage of tectonic development in the region, when the topographic gradient was consistently dipping from south-east to north-west. In contrast with this, the Basal and Upper units were accumulated on topographic slopes dipping from east-northeast to west-southwest, and from north-northwest to south-southeast respectively. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2125678245 title "Sedimentology of the Beaufort-Molteno Karoo fluvial strata in the Tuli Basin, South Africa" @default.
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