Identification of a MIS 6 age (c. 180 ka) Icelandic tephra within NE Atlantic sediments: a new potential chronostratigraphic marker
2014 (English)In: Gas Generation and Migration in Deep Geological Radioactive Waste Repositories / [ed] R. P. Shaw, London: The Geological Society Publishing House, 2014, Vol. 398, 65-80 p.Chapter in book (Refereed)
The incidence of volcanic ash (tephra) within marine sediments serves as a useful stratigraphic marker and tool for correlation. In addition, where an independent age estimate exists, tephra layers can provide a means of dating the sediments themselves. Here we present a geochemically characterized, size sorted tephra layer within Marine Isotope Stage (MIS) 6, most likely resulting from primary air-fall from an Icelandic volcanic source. This tephra layer is tentatively correlated to the Kerlingarfjoll volcanic system using major element geochemistry. The ash layer has an interpolated age of 181 +/- 6 ka based on the age model for MD04-2822. We briefly review the occurrence of silicic tephra in the North Atlantic region from MIS 7 to MIS 5e inclusive and find potential correlatives to the MD04-2822 MIS 6 ash layer in the Norway Basin and Irminger Sea.
Place, publisher, year, edition, pages
London: The Geological Society Publishing House, 2014. Vol. 398, 65-80 p.
, Geological Society Special Publications, 415
Other Earth and Related Environmental Sciences
Research subject Quaternary Geology
IdentifiersURN: urn:nbn:se:su:diva-115190DOI: 10.1144/SP398.10OAI: oai:DiVA.org:su-115190DiVA: diva2:795945
Geological Society of London Meeting on Marine Tephrochronology, London, ENGLAND, OCT 26, 20112015-03-172015-03-172015-05-27Bibliographically approved