Lithostratigraphic characterization of the Turonian in the San-Pedro Margin (Côte D’ivoire)

Raymond MOUAH 1, *, Jean paul N’goran YAO  1, Eric N’guessan YAO 2, Alexandre AKOMIAN 4, Ednard Yvonne Ama EBY 4, Stephanie BOMISSO 3, Maxime Assa ABBEY 1, Michel Crépin MOBIO 4, Ange Didier KOUTOUAN 4 and Bruno Zéli DIGBEHI 1

1 Marine Geoscience Department, FHB University, UFR-STRM, 22 BP 582 Abidjan 22, Côte d’Ivoire.
2 UFR ENVIRONMENT, LSTE Department, Jean Lorougnon Guédé University of Daloa, BP 150 Daloa, Côte d’Ivoire.
3 Mine and Geology Department, Polytechnic University of Man, UFR SGM, BP 20 Man, Côte d’Ivoire.
4 Petroci, Geology and Geophysics Department, BP V 194 Abidjan, Côte d’Ivoire.
 
Research Article
World Journal of Advanced Research and Reviews, 2023, 20(03), 606–617
Article DOI: 10.30574/wjarr.2023.20.3.2136
 
Publication history: 
Received on 16 September 2023; revised on 15 November 2023; accepted on 17 November 2023
 
Abstract: 
The lithostratigraphic characterization consisted to highlighting, the lithologic, the thickness, mineralogical and petrographic nature of the different formations encountered during drilling in the Turonian stage of the wells in the study area. The data used consist of geological reports of five boreholes and LAS (Log Ascii Standard). This characterization reveals that the Turonian range consists of three major formations, namely claystones, of siltstones and sandstones interbedded with calcareous, dolomitic and silty formations. The clays are gray to black, tender to firm, subfissile and moderately hard to hard. Sandstones are very fine to very coarse, subangular to subarronded, well to poorly sorted, with silty, calcareous and often dolomitic matrix. Note the presence of pyrite, glauconite and carbonaceous debris. A lithostratigraphic correlation shows an increase in thickness of the sediments from east to west and from north to south. In the northeast clayey and silty sediments are dominant interbedded with rare limestone and scarce sandstone , while further west and south we notice a strong presence of sandstone, loose sand interbedded with claystone, siltstone and limestone. These characteristics are typical of deep and turbiditic environments.
 
Keywords: 
Lithostratigraphic; Lithologic; Mineralogical; Turonian; San-pedro margin.
 
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Copyright information: 
Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0

 

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