Episodes with reefal formations during the Aptian–Late Cretaceous in the gulf of Hammamet (Northeastern Tunisia): insights from seismic reflection and wells data

Sebei, Kawthar; Amiri, Adnen; Abidi, Oussama; Manai, Dalel; Inoubli, Mohamed Hédi; Salem, Abdelhamid Ben

doi:10.1007/s00531-019-01678-x

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…The more or less gradual thinning of the carbonate platform from South to North of Central Tunisia that should indicate a carbonate production decrease seems to be related to the progressive disappear from south to north of rudistids bisotroms. In this regard, Skelton (2000) and Sebei (2019) assume that the water deepening should have reduced the growth capacity of rudistids and consequently the growth of the platform.…”

Section: Discussionmentioning

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: Discussionmentioning

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 Cenomanian-Turonian sedimentation is characterized by para-reef bioclastic limestone (Isis Member), deposited in an outer platform (Marie et al, 1982). To the east, considerable thickening of the reef deposits is described, particularly in the Gulf of Hammamet area (Sebei et al, 2019), before grading into clays with planktonic microfauna in the Cap-Bon, characteristic of open sea (Marie et al, 1982). Moreover, the geodynamic context of the late Cretaceous period exhibits the reactivation of inherited faults.…”

Section: Lithostratigraphy Of the Study Area And Correlation Of Measu...mentioning

confidence: 99%

South Tethyan passive margin paleoslope orientation inferred from soft-sediment deformation and fault kinematic analysis: a case study from the Cretaceous of Borj Cedria area, Tunisia

et al. 2021

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The Cretaceous outcrops of Borj Cedria-Bou Kournine area belongs to the NE-trending Atlas system of northern Tunisia. This area exposes sub-meridian folds associated with numerous N-to NWtrending major fault systems. This study together with previous surveys reveals that this N-trending folding is believed to be related to the inversion of the Jurassic and Early Cretaceous pre-existing fault zones and generated in response to the late compressive deformations. In addition, the study area provides evidence of soft-sediment deformations by good exposures of Cretaceous-aged slump sheets. Slump folds are usually associated with several meso-scale syn-sedimentary normal faulting together with frequent reworked blocs and occasional conglomeratic horizons. All these features indicate sedimentation on irregular seafloor topography. The aim of the present study is to investigate slump folds by applying techniques to reconstruct the contemporaneous slope gradient which has triggered soft-sediment deformations. Moreover, the brittle deformation is quantified using fault kinematic analysis together with the analysis of lithostratigraphic correlation and synsedimentary structures. Considerable thickness variations of Cretaceous deposits are interpreted as controlled by normal faulting activities. Likewise, fault kinematic analysis typifies a regional pure extension that trends NNW during Barremain, NNE during Albian and probably NW during Cenomanian time. Based on slump folds analysis, the inferred sub-marine paleoslope is believed to have a northward dipping during Barremian and a NNE-dipping during Albian time. On the light of the over-mentioned interpretations, it is believed that Cretaceous sedimentation of the study area is highly controlled by major syn-depositional normal faults associated with intra basin growth faulting.These fault systems seem to be related to the Southern Tethyan expansion of the rifted continental passive margin.

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Planktonic foraminiferal evidence of Late Cretaceous movements in the Gulf of Hammamet area (northeastern offshore Tunisia)

Saïdi

Zaghbib-Turki

2020

Arab J Geosci

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Episodes with reefal formations during the Aptian–Late Cretaceous in the gulf of Hammamet (Northeastern Tunisia): insights from seismic reflection and wells data

Cited by 6 publications

References 40 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

South Tethyan passive margin paleoslope orientation inferred from soft-sediment deformation and fault kinematic analysis: a case study from the Cretaceous of Borj Cedria area, Tunisia

Planktonic foraminiferal evidence of Late Cretaceous movements in the Gulf of Hammamet area (northeastern offshore Tunisia)

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