Middle Cenomanian–Turonian sequence stratigraphy of central-southern Tunisia: regional and global control on depositional patterns

Jaballah, Jalel; Negra, Mohamed Hédi; Reijmer, John J.G.

doi:10.1016/j.cretres.2020.104446

Cited by 17 publications

(1 citation statement)

References 31 publications

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“…7A, B). These hemipelagic marls would have filled up the available accommodation space during the transgressive interval of the global eustatic cycle UZA-2.6 (Abdallah 2001;Touir and Soussi 2003).Taking into account the structural framework of Central Tunisia during early Turonian, which was characterized by titled blocks limited by major E-W faults and dowstepping northward (Bismuth et al 1982;Chihi and Ben Ayed 1987;Kadri and Merzeraud 2015;Jaballah et al 2020), it seems that the Annaba marls has simultaneously sealed the early Turonian Gattar carbonate ramp and buried the tilted blocks framework and major bordering faults in Central Tunisia. Nevertheless, the Annaba marls are lacking in Sidi Bouzid and Gafsa areas, where they are replaced by collapse breccias and evaporitic layers.…”

Section: Discussion Of the Vertical Transition From The Gattar Ramp To The Bireno Rimmed Platformmentioning

confidence: 99%

Vertical transition from ramp to rimmed shelf: example of the Turonian carbonate platforms in Central Tunisia

Chaabane

Ali

Zidi

et al. 2021

Carbonates Evaporites

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The Gattar and Bireno carbonate platforms developed in Central Tunisia during early and middle Turonian, respectively. Most previous geological works consider these carbonate platforms as rimmed shelves, that developed up on a substratum arranged into a series of blocks bounded by major E-W faults. The present work aims through field observation and facies record microscopic analysis to show that the Gattar platform was not a rimmed platform as mentioned in previous works but it rather matches with a homoclinal ramp whereas the Bireno platform consists of a proper rimmed shelf. Based on the sequence stratigraphy principles, it will be shown that each of these two platforms is made of a carbonate succession that developed during the highstand of a third order eustatic cycle. The Gattar carbonate ramp is overlain by the Annaba member marls that accumulated during the following trangressive cycle. On the top of the marls accumulations, the Bireno platform rudist shoal occured during the following highstand separating between an outer shelf to the north and an inner shelf to the south. The vertical transition from the Gattar ramp to the Bireno rimmed shelf seems to have been most controlled by sea-level changes and local paleotopography rather than the play of active faults and resulting tilted blocks, as reported in the previous works.

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Section: Discussion Of the Vertical Transition From The Gattar Ramp To The Bireno Rimmed Platformmentioning

confidence: 99%

Vertical transition from ramp to rimmed shelf: example of the Turonian carbonate platforms in Central Tunisia

Chaabane

Ali

Zidi

et al. 2021

Carbonates Evaporites

View full text Add to dashboard Cite

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The rudist-rich carbonate units in central Tunisia as markers of Late Cretaceous transgressive events

Negra

Jaballah

2020

Arab J Geosci

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Characterization of Cenomanian-Turonian oxic facies in Tunisia: sequence stratigraphy and correlation of recorded bioevents

et al. 2021

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Middle Cenomanian–Turonian sequence stratigraphy of central-southern Tunisia: regional and global control on depositional patterns

Cited by 17 publications

References 31 publications

Vertical transition from ramp to rimmed shelf: example of the Turonian carbonate platforms in Central Tunisia

Vertical transition from ramp to rimmed shelf: example of the Turonian carbonate platforms in Central Tunisia

The rudist-rich carbonate units in central Tunisia as markers of Late Cretaceous transgressive events

Characterization of Cenomanian-Turonian oxic facies in Tunisia: sequence stratigraphy and correlation of recorded bioevents

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