A Late Younger Dryas-Early Holocene tephrostratigraphy for Fosen, Central Norway
2013 (English)In: Journal of Quaternary Science, ISSN 0267-8179, E-ISSN 1099-1417, Vol. 28, no 8, 803-811 p.Article in journal (Refereed) Published
A number of rapid climate oscillations occur during the Lateglacial-Early Holocene, 15-8 ka BP period and a well-developed tephrostratigraphy in association with these oscillations increases the possibilities to correlate climate archives around the North Atlantic. This paper presents a tephrostratigraphy for Fosen peninsula, Central Norway. Both the Vedde Ash ca.12.1 ka BP and the Saksunarvatn Ash approximate to 10.3 ka BP are important isochrones for correlations of Late Quaternary palaeoenvironmental records in the North Atlantic region and have been assigned ages in GICC05. Beside these tephras we have also identified a new tephra, the Fosen Tephra, with a Borrobol-type geochemistry that occurs above both the Vedde Ash and the Saksunarvatn Ash with an age approximate to 10.2 ka BP. Several tephras with Borrobol-type geochemistry have been identified around the North Atlantic. One group is the Borrobol/Penifiler tephras dated to Greenland Interstadial-1 and another group is dated to the Early Holocene. We suggest that some of the Early Holocene Borrobol-type tephras and the Fosen Tephra may actually be the same layer. If so, the Fosen Tephra is spread over a large area of the North Atlantic and has the potential to become an important marker for short-term climate variability in Scandinavia and in the northern hemisphere.
Place, publisher, year, edition, pages
Wiley-Blackwell, 2013. Vol. 28, no 8, 803-811 p.
Fosen Tephra, Norway, Saksunarvatn Ash, Tephra, Vedde Ash
IdentifiersURN: urn:nbn:se:su:diva-99143DOI: 10.1002/jqs.2676ISI: 000328348500006OAI: oai:DiVA.org:su-99143DiVA: diva2:686623
SSAG (the Swedish Society for Anthropology and Geography); Swedish Research Council 2014-01-132014-01-122014-01-16Bibliographically approved