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- Title
Palaeoenvironmental reconstruction of late Quaternary foraminifera and molluscs from the ENEA borehole (Versilian plain, Tuscany, Italy)
- Authors
Carboni, M. Gabriella; Bergamin, Luisa; Di Bella, Letizia; Esu, Daniela; Cerone, Emanuela Pisegna; Antonioli, Fabrizio; Verrubbi, Vladimiro
- Abstract
Abstract: Foraminifera and molluscs from the 90 m deep ENEA borehole (Versilian plain, central Italy) were studied for paleoenvironmental purposes. Palaeontological analyses, integrated with U/Th and radiocarbon data, helped to recognize late Quaternary sea-level changes and supplied results on tectonic mobility of the area. The study highlighted four sedimentary phases. The first phase consists of a shore environment attributed to MIS 7.1. A hiatus corresponding to MIS 6 is hypothesized at the top of this interval. Recognition of the paleo-shoreline of MIS 7.1 at −72.8m signifies a vertical displacement due to the extensional tectonics of the Apennine orogenesis. The second phase consists of a transgressive succession with evidence of warm temperatures, which was interpreted as part of the transgression leading to the MIS 5.5 highstand. The third phase includes sub-aerial and lacustrine deposits. Radiocarbon dates and palaeoecological reconstruction led us to attribute this interval to MIS 4, MIS 3 and MIS 2. The fourth phase begins with a lagoon environment attributable to Holocene sea-level rise and ends with marsh episodes, signifying the progradation of the alluvial plain. This reconstruction confirms the hypothesis of tectonic stability for the Versilian area during the Holocene.
- Subjects
TUSCANY (Italy); ITALY; QUATERNARY paleontology; FORAMINIFERA; ABSOLUTE sea level change; CARBON isotopes; HOLOCENE stratigraphic geology; CHRONOLOGY
- Publication
Quaternary Research, 2010, Vol 74, Issue 2, p265
- ISSN
0033-5894
- Publication type
Article
- DOI
10.1016/j.yqres.2010.07.006