Lower boundary of the Holocene (dashed line) as defined in the NGRIP ice core based on significant changes in δ18O, dust content and Deuterium-excess. High resolution data in the lower three panels of the diagram ranging from 11,581 to 11,819 years before year 2000 are from Steffensen et al. (2008), layout is inspired by Walker et al. (2009), fig. 5 (see refereces below).
Own work, data: Steffensen et al. (2008)
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