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Authors: | Giaccio, Biagio* Leicher, Niklas* Mannella, Giorgio* Monaco, Lorenzo* Regattieri, Eleonora* Wagner, Bernd* Zanchetta, Giovanni* Gaeta, Mario* Marra, Fabrizio* Nomade, Sebastien* Palladino, Danilo Mauro* Pereira, Alison* Scheidt, Stephanie* Sottili, Gianluca* Wonik, Thomas* Wulf, Sabine* Zeeden, Christian* Ariztegui, Daniel* Cavinato, Gian Paolo* Dean, Jonathan R.* Florindo, Fabio* Leng, Melanie J.* Macrì, Patrizia* Niespolo, Elizabeth* Renne, Paul. R.* Rolf, Christian* Sadori, Laura* Thomas, Camille* Tzedakis, Polychronis* |
Title: | Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: A new core from Fucino Basin, central Italy | Journal: | Quaternary Science Reviews | Series/Report no.: | /225 (2019) | Issue Date: | Oct-2019 | DOI: | 10.1016/j.quascirev.2019.106003 | Abstract: | Here we present the first tephrostratigraphic, palaeomagnetic, and multiproxy data from a new ~98 m deep sediment core retrieved from the Fucino Basin, central Italy, spanning the last ~430 kyr. Palaeoenvironmental proxy data (Ca-XRF, gamma ray and magnetic susceptibility) show a cyclical variability related to interglacial-glacial cycles since the Marine Isotope Stage (MIS) 12-MIS 11 transition. More than 130 tephra layers are visible to the naked eye, 11 of which were analysed (glass-WDS) and successfully correlated to known eruptions and/or other equivalent tephra. In addition to tephra already recognised in the previously investigated cores spanning the last 190 kyr, we identified for the first time tephra from the eruptions of: Tufo Giallo di Sacrofano, Sabatini (288.0 ± 2.0 ka); Villa Senni, Colli Albani (367.5 ± 1.6 ka); Pozzolane Nere and its precursor, Colli Albani (405.0 ± 2.0 ka, and 407.1 ± 4.2 ka, respectively) and Castel Broco, Vulsini (419e490 ka). The latter occurs at the bottom of the core and has been 40Ar/39Ar dated at 424.3 ± 3.2 ka, thus providing a robust chronological constrain for both the eruption itself and the base of the investigated succession. Direct 40Ar/39Ar dating and tephra geochemical fingerprinting provide a preliminary radioisotopic-based chronological framework for the MIS 11-MIS 7 interval, which represent a foundation for the forthcoming multiproxy studies and for investigating the remaining ~110 tephra layers that are recorded within this interval. Such future developments will contribute towards an improved MIS 11-MIS 7 Mediterranean tephrostratigraphy, which is still poorly explored and exploited. |
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Giaccio et al_Fucino F4-F5_revised manuscript_text_figs.pdf | Open Access | 3.69 MB | Adobe PDF | View/Open |
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