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Icelandic volcanic ash from the Late-glacial open-air archaeological site of Ahrenshoft LA 58 D, North Germany

Icelandic volcanic ash from the Late-glacial open-air archaeological site of Ahrenshoft LA 58 D, North Germany
Icelandic volcanic ash from the Late-glacial open-air archaeological site of Ahrenshoft LA 58 D, North Germany
Cryptotephra of Icelandic origin from the open-air archaeological site of Ahrenshöft LA 58 D (Kr. Nordfriesland, Schleswig-Holstein), northern Germany overlies a Late-glacial Havelte lithic assemblage, hitherto dated by 14C and biostratigraphy to the earliest part of the Late-glacial interstadial (GI-1e to GI-1c3). Peaks in ash shards are observed in two profiles. Major and minor element geochemistry indicates volcanic ash originating in the Katla system. Precise correlation to previously described tephra is uncertain due to overlapping chemical characteristics. The Ahrenshöft 14C determinations, litho- and bio-stratigraphy encompass a broad age-span for the cryptotephra bearing sediments, from the end of the Allerød to the Preboreal. The most plausible volcanic eruption correlates are the Vedde Ash (?Younger Dryas), already known from the European mainland, tephra AF555 (late Younger Dryas) and the Suduroy tephra (?Preboreal/Boreal), hitherto recorded only in the North Atlantic region. These three ash horizons have been dated to, respectively, 12,171 ± 57 yr b2k in the NGRIP ice-core, c.11,500 cal BP, in Scotland and c.8000 cal BP, by radiocarbon from the Faroe Isles. Ongoing research on deposits from the type sites for the tephra layers may in the future differentiate these markers leading to better discrimination of the chemistries and a resolution of this question.
late-glacial, early holocene, tephrochronology, vedde ash, af555 tephra, suduroy tephra, radiocarbon dating, taphonomy
0305-4403
708-716
Housley, R.A.
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Lane, C.S.
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Cullen, V.L.
4420f1d4-89b6-4561-9335-35fff7ea04bf
Weber, M.-J.
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Reide, F.
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Gamble, C.
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Brock, F.
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Housley, R.A.
c23b6c3d-900d-4301-a8d0-1792cdf8a2f2
Lane, C.S.
3a7a332b-a659-4e12-90a7-ad40c0bcd91b
Cullen, V.L.
4420f1d4-89b6-4561-9335-35fff7ea04bf
Weber, M.-J.
e9191df9-63f7-4e58-8288-f76bf0130c71
Reide, F.
37ccb37c-57f6-4f32-a9d1-f681b77c6d1f
Gamble, C.
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Brock, F.
ff28c09c-8357-49f1-ac29-8a7039557d5d

Housley, R.A., Lane, C.S., Cullen, V.L., Weber, M.-J., Reide, F., Gamble, C. and Brock, F. (2012) Icelandic volcanic ash from the Late-glacial open-air archaeological site of Ahrenshoft LA 58 D, North Germany. Journal of Archaeological Science, 39 (3), 708-716. (doi:10.1016/j.jas.2011.11.003).

Record type: Article

Abstract

Cryptotephra of Icelandic origin from the open-air archaeological site of Ahrenshöft LA 58 D (Kr. Nordfriesland, Schleswig-Holstein), northern Germany overlies a Late-glacial Havelte lithic assemblage, hitherto dated by 14C and biostratigraphy to the earliest part of the Late-glacial interstadial (GI-1e to GI-1c3). Peaks in ash shards are observed in two profiles. Major and minor element geochemistry indicates volcanic ash originating in the Katla system. Precise correlation to previously described tephra is uncertain due to overlapping chemical characteristics. The Ahrenshöft 14C determinations, litho- and bio-stratigraphy encompass a broad age-span for the cryptotephra bearing sediments, from the end of the Allerød to the Preboreal. The most plausible volcanic eruption correlates are the Vedde Ash (?Younger Dryas), already known from the European mainland, tephra AF555 (late Younger Dryas) and the Suduroy tephra (?Preboreal/Boreal), hitherto recorded only in the North Atlantic region. These three ash horizons have been dated to, respectively, 12,171 ± 57 yr b2k in the NGRIP ice-core, c.11,500 cal BP, in Scotland and c.8000 cal BP, by radiocarbon from the Faroe Isles. Ongoing research on deposits from the type sites for the tephra layers may in the future differentiate these markers leading to better discrimination of the chemistries and a resolution of this question.

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Accepted/In Press date: 1 November 2011
e-pub ahead of print date: 9 November 2011
Published date: March 2012
Keywords: late-glacial, early holocene, tephrochronology, vedde ash, af555 tephra, suduroy tephra, radiocarbon dating, taphonomy
Organisations: Archaeology

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Local EPrints ID: 386600
URI: http://eprints.soton.ac.uk/id/eprint/386600
ISSN: 0305-4403
PURE UUID: d5dbb6bc-9ed9-43a4-b076-dc4131ff0fc7

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Date deposited: 02 Feb 2016 14:03
Last modified: 23 Sep 2019 18:35

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Contributors

Author: R.A. Housley
Author: C.S. Lane
Author: V.L. Cullen
Author: M.-J. Weber
Author: F. Reide
Author: C. Gamble
Author: F. Brock

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