The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)

McGuire, Amy M.; Lane, Christine S.; Roucoux, Katherine H.; Albert, Paul; Kearney, Rebecca

doi:10.1002/jqs.3452

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The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)

Amy M. McGuire

, Christine S. Lane, Katherine H. Roucoux, Paul Albert

, Rebecca Kearney

Journal of Quaternary Science, Volume: 37, Issue: 8, Pages: 1313 - 1331

Swansea University Author: Paul Albert

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DOI (Published version): 10.1002/jqs.3452

Abstract

Terrestrial archives from the Mediterranean have been crucial to expanding our understanding of past environmental variability on a range of timescales. Dating Quaternary sequences in the Mediterranean is, however, often challenging, and age models often have large chronological uncertainties. Tephr...

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Published in:	Journal of Quaternary Science
ISSN:	0267-8179 1099-1417
Published:	Wiley 2022
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URI:	https://cronfa.swan.ac.uk/Record/cronfa60634
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spelling	2023-01-04T14:28:36.1177303 v2 60634 2022-07-26 The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece) 7f8db9327402511d4d92849cb79af644 0000-0002-6757-1452 Paul Albert Paul Albert true false 2022-07-26 SGE Terrestrial archives from the Mediterranean have been crucial to expanding our understanding of past environmental variability on a range of timescales. Dating Quaternary sequences in the Mediterranean is, however, often challenging, and age models often have large chronological uncertainties. Tephra deposits can provide crucial age control for detailed environmental reconstructions on sub‐centennial timescales. Here, tephra analysis is undertaken for the first time on a sediment core (I‐08) from Lake Ioannina, northwest Greece, for the interval spanning 46–4 ka bp. Detailed visible and ‘crypto‐’ tephra analysis identifies deposits associated with explosive volcanism at Italian volcanic sources, including Campi Flegrei, Pantelleria, and the Aeolian Islands. We identify two visible tephra layers, the Campanian Ignimbrite (CI/Y‐5; ca. 39.8 ka bp) and Pantelleria Green Tuff (PGT/Y‐6; ca. 45.7 ka), as well as the Holocene Vallone del Gabellotto cryptotephra marker (VG/E‐1; ca. 8.3 ka bp). Evidence for repeated remobilisation and redeposition of CI tephra material is outlined, and the potential mechanisms and effects of sediment reworking in lake environments are examined. Bayesian modelling, which incorporates the new tephra ages with earlier radiocarbon dates, extends the I‐08 core chronology back to ca. 46 ka bp, facilitating direct correlation of the Ioannina sequence to others in the Mediterranean region. Journal Article Journal of Quaternary Science 37 8 1313 1331 Wiley 0267-8179 1099-1417 Ioannina; last glacial cycle; Mediterranean; palaeolimnology; tephrochronology 25 7 2022 2022-07-25 10.1002/jqs.3452 Data availability statement: The data that supports the findings of this study are available in the supplementary material of this article. COLLEGE NANME Geography COLLEGE CODE SGE Swansea University Department of Geography, University of Cambridge; Natural Environment Research Council Grant: NE/E015670/1, NE/L002612/1 2023-01-04T14:28:36.1177303 2022-07-26T13:00:20.5118658 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Amy M. McGuire 0000-0001-6974-1171 1 Christine S. Lane 2 Katherine H. Roucoux 3 Paul Albert 0000-0002-6757-1452 4 Rebecca Kearney 5 60634__24742__8178527785614609aef07388442022ce.pdf 60634_VoR.pdf 2022-07-26T13:03:31.3593139 Output 3662441 application/pdf Version of Record true © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/
title	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
spellingShingle	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece) Paul Albert
title_short	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
title_full	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
title_fullStr	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
title_full_unstemmed	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
title_sort	The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)
author_id_str_mv	7f8db9327402511d4d92849cb79af644
author_id_fullname_str_mv	7f8db9327402511d4d92849cb79af644_***_Paul Albert
author	Paul Albert
author2	Amy M. McGuire Christine S. Lane Katherine H. Roucoux Paul Albert Rebecca Kearney
format	Journal article
container_title	Journal of Quaternary Science
container_volume	37
container_issue	8
container_start_page	1313
publishDate	2022
institution	Swansea University
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doi_str_mv	10.1002/jqs.3452
publisher	Wiley
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description	Terrestrial archives from the Mediterranean have been crucial to expanding our understanding of past environmental variability on a range of timescales. Dating Quaternary sequences in the Mediterranean is, however, often challenging, and age models often have large chronological uncertainties. Tephra deposits can provide crucial age control for detailed environmental reconstructions on sub‐centennial timescales. Here, tephra analysis is undertaken for the first time on a sediment core (I‐08) from Lake Ioannina, northwest Greece, for the interval spanning 46–4 ka bp. Detailed visible and ‘crypto‐’ tephra analysis identifies deposits associated with explosive volcanism at Italian volcanic sources, including Campi Flegrei, Pantelleria, and the Aeolian Islands. We identify two visible tephra layers, the Campanian Ignimbrite (CI/Y‐5; ca. 39.8 ka bp) and Pantelleria Green Tuff (PGT/Y‐6; ca. 45.7 ka), as well as the Holocene Vallone del Gabellotto cryptotephra marker (VG/E‐1; ca. 8.3 ka bp). Evidence for repeated remobilisation and redeposition of CI tephra material is outlined, and the potential mechanisms and effects of sediment reworking in lake environments are examined. Bayesian modelling, which incorporates the new tephra ages with earlier radiocarbon dates, extends the I‐08 core chronology back to ca. 46 ka bp, facilitating direct correlation of the Ioannina sequence to others in the Mediterranean region.
published_date	2022-07-25T04:18:54Z
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The dating and correlation of an eastern Mediterranean lake sediment sequence: a 46–4 ka tephrostratigraphy for Ioannina (NW Greece)

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