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Revisiting the Y-3 tephrostratigraphic marker: a new diagnostic glass geochemistry, age estimate, and details on its climatostratigraphical context

Revisiting the Y-3 tephrostratigraphic marker: a new diagnostic glass geochemistry, age estimate, and details on its climatostratigraphical context
Revisiting the Y-3 tephrostratigraphic marker: a new diagnostic glass geochemistry, age estimate, and details on its climatostratigraphical context
The ‘Y-3’ tephra is a crucial stratigraphic marker within the central Mediterranean region that falls close to the Marine Isotope Stage 3/2 transition and a cooling event proposed as a correlative of the North Atlantic Heinrich Stadial 3 (HS3). Consequently, this tephra offers great potential to assess any leads and lags in environmental responses to this abrupt climatic transition. New grain-specific glass analysis (EMPA and LA-ICP-MS) of the type locality Y-3 tephra recorded in the Ionian Sea confirms its origin from Campi Flegrei (CF) but reveals that it is compositionally different from the previously suggested proximal equivalent the VRa eruptive unit (Verdolino Valley, CF). Consequently, the 40Ar/39Ar age of the VRa should not be exported distally to the Y-3 tephra. Instead, we propose a new robust age for the Y-3 tephra following its identification in the Tenaghi Philippon sedimentary record, NE Greece. A Bayesian-based 14C age model from Tenaghi Philippon provides a distal age of 28,680–29,420 cal yrs BP for the Y-3 tephra. The identification of this tephra in NE Greece markedly extends its known eastern dispersal. Whilst its stratigraphic position falls within the latter part of a period of low tree pollen percentages related to dry stadial conditions. This new age and environmental context suggest that this marker postdates the onset of HS3 in the eastern Mediterranean region by ?2300 years.
0277-3791
105-121
Albert, Paul G.
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Hardiman, Mark
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Keller, Jörg
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Tomlinson, Emma L.
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Smith, Victoria C.
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Bourne, A.J.
ca184ead-1dc3-4b0f-8a01-cb427838d996
Wulf, Sabine
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Zanchetta, Giovanni
db45ecc1-f5fd-4608-9fe9-eb817e21efcc
Sulpizio, Roberto
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Müller, Ulrich C.
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Pross, Jörg
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Ottolini, Luisa
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Matthews, Ian P.
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Blockley, Simon P.E.
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Menzies, Martin A.
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Albert, Paul G.
be910cb9-ccc3-4004-8cec-843d04fbcd4d
Hardiman, Mark
ae3b42a6-9e66-473a-b341-40f637905533
Keller, Jörg
ae03b6dc-6d70-4c91-a546-f839a4fdb60a
Tomlinson, Emma L.
b5d890a1-63c1-4e19-b111-da772c6e971d
Smith, Victoria C.
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Bourne, A.J.
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Wulf, Sabine
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Zanchetta, Giovanni
db45ecc1-f5fd-4608-9fe9-eb817e21efcc
Sulpizio, Roberto
dafa2361-29d2-44b5-813f-5a85301aecf0
Müller, Ulrich C.
fa017ca8-248e-46cb-b849-36a71d73e310
Pross, Jörg
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Ottolini, Luisa
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Matthews, Ian P.
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Blockley, Simon P.E.
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Menzies, Martin A.
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Albert, Paul G., Hardiman, Mark, Keller, Jörg, Tomlinson, Emma L., Smith, Victoria C., Bourne, A.J., Wulf, Sabine, Zanchetta, Giovanni, Sulpizio, Roberto, Müller, Ulrich C., Pross, Jörg, Ottolini, Luisa, Matthews, Ian P., Blockley, Simon P.E. and Menzies, Martin A. (2015) Revisiting the Y-3 tephrostratigraphic marker: a new diagnostic glass geochemistry, age estimate, and details on its climatostratigraphical context. [in special issue: Synchronising Environmental and Archaeological Records using Volcanic Ash Isochrons] Quaternary Science Reviews, 118, 105-121. (doi:10.1016/j.quascirev.2014.04.002).

Record type: Article

Abstract

The ‘Y-3’ tephra is a crucial stratigraphic marker within the central Mediterranean region that falls close to the Marine Isotope Stage 3/2 transition and a cooling event proposed as a correlative of the North Atlantic Heinrich Stadial 3 (HS3). Consequently, this tephra offers great potential to assess any leads and lags in environmental responses to this abrupt climatic transition. New grain-specific glass analysis (EMPA and LA-ICP-MS) of the type locality Y-3 tephra recorded in the Ionian Sea confirms its origin from Campi Flegrei (CF) but reveals that it is compositionally different from the previously suggested proximal equivalent the VRa eruptive unit (Verdolino Valley, CF). Consequently, the 40Ar/39Ar age of the VRa should not be exported distally to the Y-3 tephra. Instead, we propose a new robust age for the Y-3 tephra following its identification in the Tenaghi Philippon sedimentary record, NE Greece. A Bayesian-based 14C age model from Tenaghi Philippon provides a distal age of 28,680–29,420 cal yrs BP for the Y-3 tephra. The identification of this tephra in NE Greece markedly extends its known eastern dispersal. Whilst its stratigraphic position falls within the latter part of a period of low tree pollen percentages related to dry stadial conditions. This new age and environmental context suggest that this marker postdates the onset of HS3 in the eastern Mediterranean region by ?2300 years.

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Accepted/In Press date: 1 April 2014
e-pub ahead of print date: 1 May 2014
Published date: 15 June 2015
Organisations: Palaeoenvironment Laboratory (PLUS)

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Local EPrints ID: 405031
URI: https://eprints.soton.ac.uk/id/eprint/405031
ISSN: 0277-3791
PURE UUID: 9c894924-35f7-44a0-a430-58c286b657d3
ORCID for A.J. Bourne: ORCID iD orcid.org/0000-0003-1506-6160

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Date deposited: 26 Jan 2017 10:25
Last modified: 15 Aug 2019 00:27

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Contributors

Author: Paul G. Albert
Author: Mark Hardiman
Author: Jörg Keller
Author: Emma L. Tomlinson
Author: Victoria C. Smith
Author: A.J. Bourne ORCID iD
Author: Sabine Wulf
Author: Giovanni Zanchetta
Author: Roberto Sulpizio
Author: Ulrich C. Müller
Author: Jörg Pross
Author: Luisa Ottolini
Author: Ian P. Matthews
Author: Simon P.E. Blockley
Author: Martin A. Menzies

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