A New Contribution to the Late Quaternary Tephrostratigraphy of the Mediterranean; Aegean Sea Core LC21

Satow, C, Tomlinson, E, Grant, K, Albert, P, Smith, V, Manning, C, Ottolini, L, Wulf, S, Rohling, E, Lowe, J, Blockley, S and Menzies, M (2015) A New Contribution to the Late Quaternary Tephrostratigraphy of the Mediterranean; Aegean Sea Core LC21. Quaternary Science Reviews, 117, pp. 96-112. ISSN (print) 0277-3791

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Abstract

Tephra layers preserved in marine sediments can contribute to the reconstruction of volcanic histories and potentially act as stratigraphic isochrons to link together environmental records. Recent developments in the detection of volcanic ash (tephra) at levels where none is macroscopically visible (so-called ‘crypto-tephra’) have greatly enhanced the potential of tephrostratigraphy for synchronising environmental and archaeological records by expanding the areas over which tephras are found. In this paper, crypto-tephra extraction techniques allow the recovery of 8 non-visible tephra layers to add to the 9 visible layers in a marine sediment core (LC21) from the SE Aegean Sea to form the longest, single core record of volcanic activity in the Aegean Sea. Using a novel, shard-specific methodology, sources of the tephra shards are identified on the basis of their major and trace element single-shard geochemistry, by comparison with geochemical data from proximal Mediterranean volcanic stratigraphies. The results indicate that the tephra layers are derived from 14 or 15 separate eruptions in the last ca. 161 ka BP: 9 from Santorini; 2 or 3 from Kos, Yali, or Nisyros; 2 from the Campanian province; and one from Pantelleria. The attributions of these tephra layers indicate that 1) inter-Plinian eruptions from Santorini may have produced regionally significant tephra deposits, 2) marine tephrostratigraphies can provide unique and invaluable data to eruptive histories for island volcanoes, and 3) tephra from both Pantelleria and Campania may be used to correlate marine records from the Aegean Sea to those from the Tyrrhenian, Adriatic and Ionian Seas.

Item Type: Article
Uncontrolled Keywords: Tephra, trace elements, Santorini, Campanian ignimbrite, Pantelleria, Kos, Yali, Aegean Sea, Mediterranean
Research Area: Earth systems and environmental sciences
Geography and environmental studies
Faculty, School or Research Centre: Faculty of Science, Engineering and Computing (until 2017) > School of Geography, Geology and the Environment
Depositing User: Christopher Satow
Date Deposited: 06 Jul 2015 09:10
Last Modified: 23 Jul 2015 14:41
DOI: https://doi.org/10.1016/j.quascirev.2015.04.005
URI: http://eprints.kingston.ac.uk/id/eprint/31435

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