Sedimentology and environmental interpretation of the Coniacian deposits in the Saharan platform (SE Tunisia)

In southern Tunisia, the carbonate series of the Upper Cretaceous (from Turonian to Campanian) are widely present in the Saharan platform and the Chotts ridge. The study of several sections in this area permits analyzing these carbonates which help to determine their depositional environment. This s...

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Bibliographic Details
Published inCarbonates and evaporites Vol. 32; no. 2; pp. 135 - 146
Main Authors Khila, Amna, Ouaja, Mohamed, Zargouni, Fouad
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2017
Springer Nature B.V
Subjects
Carbonates
Cretaceous
Earth and Environmental Science
Earth Sciences
Geology
Mineral Resources
Mineralogy
Monotony
Original Article
Sedimentary facies
Sedimentology
Slump structures
Tectonics
Tidal flats
Tunisia
Saharan platform
Facies association
Sedimentary evolution
Coniacian
Ramp environment
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Summary:In southern Tunisia, the carbonate series of the Upper Cretaceous (from Turonian to Campanian) are widely present in the Saharan platform and the Chotts ridge. The study of several sections in this area permits analyzing these carbonates which help to determine their depositional environment. This study was based not only on a detailed facies but also on a microfacies analysis. Fourteen facies were identified. They could be organized in six facies associations which characterize a ramp environment ranging from tidal flat to middle ramp settings. These carbonates show considerable variations of facies and thickness with many syn-tectonic figures (slumps). This result contrasts the monotony of these series and indicates a very important sedimentary dynamics. This dynamic is controlled primarily by the reactivation of preexistent faults.
ISSN:0891-2556
1878-5212
DOI:10.1007/s13146-015-0280-3