Publication Date:
2016-05-27
Description:
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.
Type:
Article
,
PeerReviewed
Format:
text
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