Journal Article
Revised age estimate of the Mjáuvøtn tephra A on the Faroe Islands based on Bayesian modelling of 14 C dates from two lake sequences
Jesper Olsen; Esther Ruth Gudmundsdóttir; Svante Björck; Bent V. Odgaard; Jan Heinemeier
Journal of Quaternary Science · Vol. 25, Issue 5 · pp. 612-616 · 2010
Abstract
Tephra horizons are potentially perfect time markers for dating and cross‐correlation among diverse Holocene palaeoenvironmental records such as ice cores and marine and terrestrial sequences, but we need to trust their age. Here we present a new age estimate of the Holocene Mjáuvøtn tephra A using accelerator mass spectrometry 14 C dates from two lakes on the Faroe Islands. With Bayesian age modelling it is dated to 6668–6533 cal. a BP (68.2% confidence interval) – significantly older and better constrained than the previous age. Copyright © 2010 John Wiley & Sons, Ltd.