Reanalysis of the Atmospheric Radiocarbon Calibration Record from Lake Suigetsu, Japan

• DOI: 10.1017/rdc.2020.18
• Publication Date: 2020-03-25T06:03:46Z
• Authors: Christopher Bronk...; Timothy J Heaton; Gordon Schlolaut; Richard A Staff; Charlotte L Bryant; Achim Brauer; Henry F Lamb; Michael H Marshall; Takeshi Nakagawa
• Keywords: Macrofossil; Speleothem; Varve; Chronology

ABSTRACT Terrestrial plant macrofossils from the sedimentary record of Lake Suigetsu, Japan, provide only quasi-continuous direct atmospheric radiocarbon ( 14 C) covering last 50 ka cal BP (Bronk Ramsey et al. 2012). Since then, new high precision data have become available on U-Th dated speleothems Hulu Cave China, same time range (Cheng 2018). In addition, an updated varve-based chronology has also been published for 2006 core Suigetsu (SG06) based extended microscopic analysis sediments and improved algorithms interpolation (Schlolaut Here we reanalyze dataset varve counting information constraints imposed by speleothem data. This enables calendar age scale to be used in construction consensus IntCal calibration curve. Comparison macrofossil records provides insight into mechanisms underlying incorporation carbon different types relative strengths archive purposes.