Additional Supporting Information may be found in the online version of this article at the publisher's web-site.

jqs2640-sm-0001-SupFig-S1.pdf623KFig. S1. LOI profiles of Kråkenes cores 46 and 67 plotted on their depth scales.
jqs2640-sm-0002-SupFig-S2.pdf832KFig. S2. Photographs of the AL/YD and YD/H transitions in core 46 from Kråkenes.
jqs2640-sm-0003-SupFig-S3.pdf323KFig. S3. Probability density functions for the modelled ages of the Saksunarvatn Ash and YD/H boundary in Kråkenes Lake testing the age-reservoirs in gyttja dating samples.
jqs2640-sm-0004-SupTab-S1.pdf348KTable S1. Radiocarbon dates from Kråkenes core 46.
jqs2640-sm-0005-SupTab-S2.pdf225KTable S2. Radiocarbon dates from Kråkenes core 67.
jqs2640-sm-0006-SupTab-S3.pdf182KTable S3. OxCal code for age–depth modelling of the Kråkenes core 46 chronology.
jqs2640-sm-0007-SupTab-S4.pdf173KTable S4. OxCal code for age–depth modelling of the Kråkenes core 67 chronology.
jqs2640-sm-0008-SupTab-S5.pdf179KTable S5. Duration of the YD transitions represented by the LOI change at Kråkenes Lake.

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.