Revised age estimate of the Mjauvotn tephra A on the Faroe Islands based on Bayesian modelling of C-14 dates from two lake sequences

• Published in: Journal of Quaternary Science
• Main Authors: Olsen, Jesper, Gudmundsdottir, Esther Ruth, Björck, Svante, Odgaard, Bent V., Heinemeier, Jan
• Format: Article in Journal/Newspaper
• Language: English
• Published: John Wiley & Sons Inc. 2010
• Subjects: Geology; Faroe Islands; Mjauvotn tephra A; tephrochronology; radiocarbon dating; Holocene
• Online Access: https://lup.lub.lu.se/record/1654374; https://doi.org/10.1002/jqs.1405

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 Mjauvotn tephra A using accelerator mass spectrometry C-14 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 (C) 2010 John Wiley & Sons, Ltd.