Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: a new core from Fucino Basin, central Italy

Giaccio, Biagio; Leicher, Niklas; Mannella, Giorgio; Monaco, Lorenzo; Regattieri, Eleonora; Wagner, Bernd; Zanchetta, Giovanni; Gaeta, Mario; Marra, Fabrizio; Nomade, Sébastien; Palladino, Danilo M.; 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. ORCID: https://orcid.org/0000-0003-1115-5166; Macrì, Patrizia; Niespolo, Elizabeth; Renne, Paul R.; Rolf, Christian; Sadori, Laura; Thomas, Camille; Tzedakis, Polychronis C.. 2019 Extending the tephra and palaeoenvironmental record of the Central Mediterranean back to 430 ka: a new core from Fucino Basin, central Italy. Quaternary Science Reviews, 225, 106003. 10.1016/j.quascirev.2019.106003

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Official URL: http://dx.doi.org/10.1016/j.quascirev.2019.106003

Abstract/Summary

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 (419–490 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.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.quascirev.2019.106003
ISSN:	02773791
Date made live:	28 Oct 2019 15:35 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/525620

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1016/j.quascirev.2019.106003

ISSN:

02773791

Date made live:

28 Oct 2019 15:35 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/525620