14C AMS dates of unidentified organic material from the ice wedges of Batagay

(a) The resulting 14C ages were calibrated using the IntCal20 calibration curve (Reimer et al., 2020) and the Oxcal version 4.4.4 program (Bronk Ramsey, 2021). (b) Ages were calibrated to calendar years before present (where present is 1950 A.D.) using the IntCal20 calibration curve; age ranges at the 95.4% probability level. (c) Calendar ages are the median age with one sigma uncertainty. Sample processing completed at the Institute of Geography of RAS, analyses completed at the University of Georgia radiocarbon facility.

(a) 所得碳-14（14C）年代数据采用IntCal20校正曲线（IntCal20 calibration curve，Reimer等，2020）与Oxcal 4.4.4版本程序（Oxcal version 4.4.4，Bronk Ramsey，2021）完成校正。(b) 年代数据通过IntCal20校正曲线校正为距现今（现今定义为公元1950年）的日历年代，其年代范围对应95.4%概率水平的置信区间。(c) 日历年代以中位年龄及1σ（一倍标准偏差）不确定度表征。样品处理工作由俄罗斯科学院地理研究所完成，测试分析工作由佐治亚大学放射性碳测年实验室执行。