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No evidence from the eastern Mediterranean for a MIS 5e double peak sea-level highstand

  • Barbara Mauz (a1) (a2), Zhixiong Shen (a3), Noureddine Elmejdoub (a4) and Giorgio Spada (a5)

Abstract

To understand past and future sea-level variability, it is important to know if during an interglacial the eustatic sea level is constant or oscillates by several meters around an average value. Several field sites within and outside the tropics have been interpreted to suggest such oscillations during Marine Oxygen Isotope Stage (MIS) 5e (129–116 ka). Here, we present our analysis of one such non-tropical site, Hergla, where a facies succession indicates two foreshore deposits above each other, previously interpreted as MIS 5e sea-level highstand amplified by a second rise. Our study, based on field, microfacies, and optical age Bayesian statistics shows a sea-level rise forming the upper foreshore strata that coincided with the global sea-level rise of the MIS 5a interstadial. The site does therefore not provide evidence for the MIS 5e double peak. We conclude from our analysis that the facies-based proxy is insensitive to small-scale sea-level oscillation. Likewise, uncertainties associated with age estimates are too large to robustly infer a short-term sea-level change.

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Corresponding author

*Corresponding author at: School of Environmental Sciences, University of Liverpool, Liverpool L69 7ZT, UK; School of Geographie und Geologie, University of Salzburg, 5020 Salzburg, Austria. E-mail address mauz@liverpool.ac.uk (B. Mauz).

References

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No evidence from the eastern Mediterranean for a MIS 5e double peak sea-level highstand

  • Barbara Mauz (a1) (a2), Zhixiong Shen (a3), Noureddine Elmejdoub (a4) and Giorgio Spada (a5)

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