Identification of the Fugloyarbanki tephra in the NGRIP ice core: a key tie‐point for marine and ice‐core sequences during the last glacial period

A visible tephra horizon in the NGRIP ice core has been identified by geochemical analysis as the Fugloyarbanki Tephra, a widespread marker horizon in marine cores from the Faroe Islands area and the northern North Atlantic. An age of 26 740 ± 390 yr b2k (1s uncertainty) is derived for this tephra a...

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Bibliographic Details
Published in:Journal of Quaternary Science
Main Authors: Davies, S. M., Wastegård, S., Rasmussen, T. L., Svensson, A., Johnsen, S. J., Steffensen, J. P., Andersen, K. K.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley-Blackwell 2008
Subjects:
Faroe Islands
Greenland
Fugloy*
Greenland ice core
ice core
NGRIP
North Atlantic
Online Access:https://oceanrep.geomar.de/id/eprint/32937/
https://oceanrep.geomar.de/id/eprint/32937/1/Davies.pdf
https://doi.org/10.1002/jqs.1182
Description
Summary:A visible tephra horizon in the NGRIP ice core has been identified by geochemical analysis as the Fugloyarbanki Tephra, a widespread marker horizon in marine cores from the Faroe Islands area and the northern North Atlantic. An age of 26 740 ± 390 yr b2k (1s uncertainty) is derived for this tephra according to the new Greenland Ice Core Chronology (GICC05) based on multiparameter counting of annual layers. Detection of this tephra for the first time within the NGRIP ice core provides a key tie-point between marine and ice-core records during the transition between MIS 3 and 2. Identification of this volcanic event within the Greenland records demonstrates the future potential of using tephrochronology to precisely correlate palaeoarchives in widely separated localities that span the last glacial period, as well as providing a potential method for examining the extent of the radiocarbon marine reservoir effect at this time.

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