EGU21-4048, updated on 04 Mar 2021
https://doi.org/10.5194/egusphere-egu21-4048
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Relative sea level change during MIS 3: a black hole in the world. New observations from Calabria, central Mediterranean sea

Fabrizio Antonioli1, Lucio Calcagnile2, Luigi Ferranti3, Giuseppe Mastronuzzi4, Carmelo Monaco5, Paolo Montagna6, Paolo Orrù7, Gianluca Quarta8, Fabrizio Pepe9, Giovanni Scardino10, Giovanni Scicchitano11, Paolo Stocchi12, and Marco Taviani13
Fabrizio Antonioli et al.
  • 1INGV, Associate Res. Roma, Italy (fabrizioantonioli2@gmail.com)
  • 2CEDAD, University of Salento, Italy (lucio.Calcagnile@unisalento.it)
  • 3Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse, Napoli University, Italy l(uigi.ferranti@unina.it)
  • 4Dipartimento di Scienze della Terra, Bari University, Italy (gimastronuzzi@libero.it)
  • 5Dipartimento di Scienze della Terra, Catania University, Italy (cmonaco@unict.it)
  • 6Polar Sciences, CNR Bologna, Italy (paolo.montagna@cnr.it)
  • 7Dipartimento di Scienze della Terra, Cagliari University (orrup@unica.it)
  • 8CEDAD, University of Salento, Italy (gianluca.quarta@unisalento.it)
  • 9Dipartimento di Scienze della Terra, Palermo University (fabrizio.pepe@unipa.it)
  • 10Dipartimento di Scienze della Terra, Bari University, Italy (giovanni.scardino@uniba.it)
  • 11Dipartimento di Scienze della Terra, Bari University, Italy (gianfranco.scicchitano@uniba.it)
  • 12NIOZ Royal Netherlands Institute for Sea Research Coastal Systems Department, The Nederland (paolo.Stocchi@nioz.nl)
  • 13CNR Bologna, Italy(marco.taviani@cnr.it)

Estimates of global ice volume during MIS 3 (60-29 ka) can be constrained between -25 and -87 m (Shackleton, 2000; Waelbroeck et al., 2002; Clark et al., 2009; Hughes et al., 2013; Grant et al., 2014). As regards the maximum altitude reached during this period there are few observed data for a comparison between the global curves and the variations due to different rheostay of the mantle in coastal areas. Uncertainties on the rheostatic behaviour near- or far-fields from the ice bulk during cold period, make it very difficult to estimate the local sea level during MIS 3. Several factors make investigations of  MIS 3 sea level difficult: i) the areas where suitable coastal sediments formed are currently submerged at depths of few tens of meters below present sea level; ii) the preservation of geomorphic features and sedimentary records is limited due to the erosion occurred during the Last Glacial Maximum (LGM) with sea level at depth of -130m, followed by marine transgression that determined  the development of ravinement surfaces).

Few data were observed worldwide, especially when tectonics or GIA in the near field leads to uplifts. Our research aims to point out what has been published globally and in the Mediterranean, but, above all, to illustrate the sections of new outcrops in Cannitello (Calabria, Italy) where we have found and dated fossiliferous marine pocket beaches deposited on uplifted bed metamorphic rock. Radiocarbon ages of marine shells (about 43 kyrs cal BP) indicate that these outcrops (presently at 28 and 30 meters above sea level) belong to MIS 3.1. Based on some considerations regarding the altitude of MIS 3.1 highstand, the correction for altitude with the local vertical tectonic movements and GIA of the Cannitello outcrops allows us to revise the eustatic altitude of this highstand. This is consistent with the recent findings (Gowan et al., 2020), which are based on a novel ice sheet modelling technique.

Clark, P.U., Dyke, A.S., Shakun, J.D., Carlson, A.E., Clark, J., Wohlfarth, B., Mitrovica, J.X., Hostetler, S.W., McCabe, A.M., 2009. The Last Glacial Maximum. Science 325, 710–714. doi:10.1126/science.1172873

Gowan, E.J., Zhang, X., Khosravi, S., Rovere, A., Stocchi, P., Hughes, A. C., Gyllencreutz, R., Mangerud, J., Svendsen, J. I., Lohmann, G. (in print): Global ice sheet reconstruction for the past 80000 years. PANGEA, Earth & Environmental Science https://doi.org/10.1594/PANGAEA.905800.

Grant, K.M., Rohling, E.J., Ramsey, C.B., Cheng, H., Edwards, R.L., Florindo, F., Heslop, D., Marra, F., Roberts, A.P., Tamisiea, M.E., Williams, F., 2014. Sea-level variability over five glacial cycles. Nature Communications 5, 5076. doi:10.1038/ncomms6076

Hughes, P.D., Gibbard, P.L., Ehlers, J., 2013. Timing of glaciation during the last glacial cycle: evaluating the concept of a global ‘Last Glacial Maximum’ (LGM). Earth-Science Reviews 125, 171–198. doi:10.1016/j.earscirev.2013.07.003

Shackleton, N.J., 2000. The 100,000-Year Ice-Age Cycle Identified and Found to Lag Temperature, Carbon Dioxide, and Orbital Eccentricity. Science 289, 1897–1902. doi:10.1126/science.289.5486.1897

Waelbroeck, C., Labeyrie, L., Michel, E., Duplessy, J.C., McManus, J.F., Lambeck, K., Balbon, E., Labracherie, M., 2002. Sea-level and deep water temperature changes derived from benthic foraminifera isotopic records. Quaternary Science Reviews, EPILOG 21, 295–305. doi:10.1016/S0277-3791(01)00101-9

How to cite: Antonioli, F., Calcagnile, L., Ferranti, L., Mastronuzzi, G., Monaco, C., Montagna, P., Orrù, P., Quarta, G., Pepe, F., Scardino, G., Scicchitano, G., Stocchi, P., and Taviani, M.: Relative sea level change during MIS 3: a black hole in the world. New observations from Calabria, central Mediterranean sea, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-4048, https://doi.org/10.5194/egusphere-egu21-4048, 2021.

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