The late MIS 5 Mediterranean tephra markers: a reappraisal from peninsular Italy terrestrial records (Articolo in rivista)

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  • The late MIS 5 Mediterranean tephra markers: a reappraisal from peninsular Italy terrestrial records (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Biagio Giaccio, Sebastien Nomade, Sabine Wulf, Roberto Isaia, Gianluca Sottili, Giuseppe Cavuoto, Paolo Galli, Paolo Messina, Andrea Sposato, Roberto Sulpizio, Giovanni Zanchetta (2012)
    The late MIS 5 Mediterranean tephra markers: a reappraisal from peninsular Italy terrestrial records
    in Quaternary science reviews
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Biagio Giaccio, Sebastien Nomade, Sabine Wulf, Roberto Isaia, Gianluca Sottili, Giuseppe Cavuoto, Paolo Galli, Paolo Messina, Andrea Sposato, Roberto Sulpizio, Giovanni Zanchetta (literal)
Pagina inizio
  • 31 (literal)
Pagina fine
  • 45 (literal)
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  • 56 (literal)
Rivista
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  • 15 (literal)
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  • a Istituto di Geologia Ambientale e Geoingegneria, CNR, Via Salaria km 29.300, 00015 Monterotondo, Rome, Italy b Laboratoire des Sciences du Climat et de L'Environnement (IPSL-CEA-CNRS-UVSQ), Domaine du CNRS Bât. 12, Avenue de la Terrasse, 91198 Gif sur Yvette, France c GFZ German Research Centre for Geosciences, Section 5.2, Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany d Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione di Napoli, Osservatorio Vesuviano, Via Diocleziano 328, 80124 Naples, Italy e Dipartimento della Protezione Civile, Via Vitorchiano 2, 00189 Rome, Italy f Dipartimento di Scienze della Terra e Geoambientali, Via Orabona 4, 70125 Bari, Italy g IDPA-CNR, Via M. Bianco 9, Milan, Italy h Dipartimento di Scienze della Terra, University of Pisa, Via S. Maria, 53, 56126 Pisa, Italy i Istituto di Geoscienze e Georisorse, CNR, Via Moruzzi 1, 56100 Pisa, Italy j Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione di Pisa, Via della Faggiola 32, 56126 Pisa, Italy (literal)
Titolo
  • The late MIS 5 Mediterranean tephra markers: a reappraisal from peninsular Italy terrestrial records (literal)
Abstract
  • We present new tephrostratigraphic records from the late MIS 5 (ca 110e80 ka) terrestrial sediments from southern and central Italy. On the one hand, the central Italy record consists of an outcropping lacustrine sequence from the Sulmona intermountain basin that contains four trachyticephonolitic tephra layers (POP3, POP2a, POP2b, POP1), all of which show a K-alkaline affinity that is typical for the Roman co-magmatic Province. The POP3 and POP1 layers were dated by 40Ar/39Ar method at 106.2 ? 1.3 ka (2s) and 92.4 ? 4.6 ka (2s), respectively. The sequence in southern Italy, on the other hand, is represented by post-Tyrrhenian coastal deposits of the Cilento area, Campania, which contain two trachytic layers (CIL2, CIL1) that show the same K-alkaline affinity. Based on their chemical compositions and radiometric ages, POP3 and POP1 are firmly correlated with the marine tephra layers X-5 (105 ? 2 ka) and C-22 (ca 90 ka), which, in turn, match tephras TM-25 and TM-23-11, respectively, in the lacustrine sequence of Lago Grande di Monticchio (southern Italy). Of note, the POP1 layer also matches the Adriatic Sea tephra PRAD 2517 that was previously correlated with the older X-5 layer. The tephra couplet POP2a and POP2b (ca 103 and 103.5 ka, extrapolated ages) are compatible with the TM- 24b and TM-24-3 tephras in Monticchio, which match both the stratigraphic positions and the chemical compositions. In the Cilento area, as well as the already described X-6 layer (ca 108 ka) (CIL2), we recognise a new stratigraphic superimposed layer (CIL1) that matches the POP3/TM-25/C-27/X-5 Mediterranean marker(s). In summary, the data presented here provide new chemical and 40Ar/39Ar chronological constraints towards a robust late MIS 5 tephrostratigraphy of the central Mediterranean, although at the same time, they also reveal how the tephrostratigraphy itself might be flawed when dealing with tephra markers that are not adequately constrained and characterised. (literal)
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