Variability of the grain-sized fractions during the last three millennia within the sedimentary fillings of the saline system of Mhabeul: the Holocene cyclostratigraphy

Gammoudi, Amal; Essefi, Elhoucine; Rigane, Hafedh

doi:10.1007/s12517-019-4472-3

Cited by 12 publications

(4 citation statements)

References 51 publications

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“…As Duloutre 2010 said, this period indicates the maximum extension of the glaciers in modern times, between the 16th century until the years 1850-1860, also marked by a strong ood of the Alpine glaciers, with some maxima around 1600, during the 17th century, around 1820 and nally in the 1850s. However, the sebkha El-Guettiate is identi ed by a balance between clay sedimentation and sandy sedimentation, corresponding to the gray scale manifested by an intermediate gray intensity (Gammoudi et al 2019).…”

Section: Climate Cycles and Factors Involved In Holocene Cyclostratig...mentioning

confidence: 99%

“…Mann However, in the northern hemisphere, the Dark Age period is characterized by a cold climate that existed between 400 and 765 AD (Helama et al 2017). During this period indicated by elevation of the sandy fraction, and representation a large ood (Marquer et al 2008;Gammoudi et al 2019).…”

Section: Climate Cycles and Factors Involved In Holocene Cyclostratig...mentioning

confidence: 99%

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WITHDRAWN: Lithological Variations over the Last Two Millennia within the Sedimentary Fillings of El- Guettiate in South East Tunisia: The Holocene Cyclostratigraphy

Bouabid

Sra

Dutton

et al. 2023

Preprint

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The Holocene sedimentary record of the Sebkha El Guettiate is located on the southern coast of Skhira, Gulf of Gabès in Tunisia. The cyclostratigraphic study depends on the idea that important segments of the stratigraphic record have recognizably encoded the orbital armature, periodic variations of the terrestrial insolation (Milankovitch cycles). It is a specific method of stratigraphy which studies the succession of different geological strata based on the results of climatology, astronomy and mathematical techniques. Holocene cyclostratigraphy is related to solar activity and other oceanographic and astronomical factors. This study aimed to test the climatic cyclicity along a core of Sebkha El-Guettiate located along the Mediterranean coast in Tunisia, by focusing on the study of the particle size distribution, in particular the variability of the sandy and silty fractions. Based on the dating of Zaibi et al. (2011) they were estimated to cover the last millennia with a sedimentation rate of 0.32 mm/year. This rate accepts the preparation of a depth-age model to perform the spectral analysis.Our analysis found cycles of ≈ 2000, ≈ 1600, 1300, 1000, 800, 595, 324 and 166 years. The 2000 year and 1000 year cycles are related to solar activity. The 1600 years cycle is likely related to internal forcing of the Atlantic Ocean. The 1300-year and 800-year cycles are probably related to the thermohaline circulation of the oceans. However, the other cycles of 600 years 324 years and 166 years are probably related to other oceanographic and atmospheric factors.

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Section: Climate Cycles and Factors Involved In Holocene Cyclostratig...mentioning

confidence: 99%

Section: Climate Cycles and Factors Involved In Holocene Cyclostratig...mentioning

confidence: 99%

WITHDRAWN: Lithological Variations over the Last Two Millennia within the Sedimentary Fillings of El- Guettiate in South East Tunisia: The Holocene Cyclostratigraphy

Bouabid

Sra

Dutton

et al. 2023

Preprint

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“…Sand and iron make up the third group that indicates an increasing erodability and/or sea level rise. Recent studies (e.g., Gammoudi et al, 2019;Gammoudi, 2020) (above 8 cm depth). The Anthropocene-Great Acceleration signal at the top of this core drill is caused by the radical variation of the sedimentary environment taking place due to changes of climatic conditions and/or anthropogenic pollution.…”

Section: 3statistical Detection Of the Anthropocene-great Accelerationmentioning

confidence: 97%

Record of the Anthropocene-Great Acceleration along a core from the coast of Sfax, southeastern Tunisia

2021

Turkish J Earth Sci

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This work is aimed to investigate radical changes in the sedimentary filling of the subtidal coast of Sfax using a 68 cm-long core to study the onset and the limit of the Anthropocene-Great Acceleration within this wetland located in Tunisia. The sampling was done 2 cm intervals to obtain a total of 34 samples. The measurement of the magnetic susceptibility along the core showed an obvious upward increasing related to high content of heavy metals. Also, the distribution of clay, silt and sand percentages showed an increasing sediment flux which took place on the deltas during the Anthropocene-Great Acceleration. The Principal Component Analysis indicates that some variables related to pollution; others are related to eustatism and/or climate change. This may be caused by the overlap of the natural and anthropogenic activities during the Anthropocene-Great Acceleration. Clustering shows the individualization of the Anthropocene-Great Acceleration strata comparably with the Holocene. The application of the Climate Change and Impact Research: the Mediterranean Environment (CIRCE) project climate models shows that the Anthropocene-Great Acceleration is marked by an increase of the sea surface temperature and the number of alien species. Future simulations indicate that the case is candidate to worsen at the perspectives of 2050.

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“…The movement aspects of sediments, such as deposition and transport, are essentially pertinent to the particle size (Cheng and Liu 2015 ). Many sedimentological and hydromorphic studies (van B Weaver and Stone 1980 ; Edmonds and Slingerland 2010 ; Beierle et al 2002 ; Caldwell and Edmonds 2014 ; Zhu et al 2014 ; Allen et al 2015 ; Allen et al 2017 ; Feng et al 2017 ; Zhang et al 2017 ; Gammoudi et al 2019 ; Azidane et al 2021 ) have attempted to identify the sedimentation process and the hydromorphic evolution through using and modeling sediment types and their particle size. Hence, the basic framework of sediment is fundamentally portrayed by the particle grain size (PSD) and mineralogical composition.…”

Section: Introductionmentioning

confidence: 99%

The use of particle size distribution integrated with consistency limits for experimentally simulating fine-grained sedimentary units

2021

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Variability of the grain-sized fractions during the last three millennia within the sedimentary fillings of the saline system of Mhabeul: the Holocene cyclostratigraphy

Cited by 12 publications

References 51 publications

WITHDRAWN: Lithological Variations over the Last Two Millennia within the Sedimentary Fillings of El- Guettiate in South East Tunisia: The Holocene Cyclostratigraphy

WITHDRAWN: Lithological Variations over the Last Two Millennia within the Sedimentary Fillings of El- Guettiate in South East Tunisia: The Holocene Cyclostratigraphy

Record of the Anthropocene-Great Acceleration along a core from the coast of Sfax, southeastern Tunisia

The use of particle size distribution integrated with consistency limits for experimentally simulating fine-grained sedimentary units

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