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Age, geochemistry and distribution of the mid-Holocene Hekla-S/Kebister tephra
Stockholms universitet.
Stockholms universitet.
Stockholms universitet.
Vise andre og tillknytning
2008 (engelsk)Inngår i: the Holocene, ISSN 0959-6836, Vol. 18, nr 4, s. 539-549Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The middle Holocene Hekla-S/Kebister tephra originates in the Hekla volcanic system on SW Iceland. The distal distribution of the tephra includes the Faroe Islands, Shetland and Central Sweden, indicating a main dispersal towards the east. The chemical composition of the tephra follows the pattern of other major eruptions of Hekla, and ratios between selected oxides may in some cases allow separation from other major Holocene tephras from Hekla. Tephra from the Plinian phase dominates in eastern sites, while tephra also from later phases is found in the Faroe sites. Wiggle-matching of radiocarbon dates around the tephra in a Swedish peat-bog suggests an age around 3720 cal yr BP (3750-3700 cal yr BP), which is in accordance with previous attempts to date this tephra. This is within a period with significant climate changes in NW Europe and opens possibilities for exact comparisons of peat and lake sediment records from different geographical areas.

sted, utgiver, år, opplag, sider
2008. Vol. 18, nr 4, s. 539-549
Emneord [en]
Hekla, radiocarbon, Holocene, wiggle-matching, peat
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-15417DOI: doi:10.1177/0959683608089208ISI: 000256882300004OAI: oai:DiVA.org:su-15417DiVA, id: diva2:181937
Tilgjengelig fra: 2009-01-26 Laget: 2009-01-26 Sist oppdatert: 2011-01-10bibliografisk kontrollert

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