Radiocarbon ages of samples and modern coretop date from the STU (Stump Pond) and APB1 (wetland) cores.

Maximum, minimum, and median calibrated 2-σ age ranges shown here were calculated with CALIB version 8.2 [19]. For the APB1-B core, the sample depths are listed as within-core depths with total combined depths in parentheses. “B.P.” refers to years before A.D. 1950. The age obtained for the 5 cm sample in APB1-B (italics) was considered to be an outlier and was not included in the APB1 age-depth model. Not applicable is denoted by n.a. for the APB1 coretop.

本文展示的最大、最小及中位数校准2σ年龄范围，均通过CALIB 8.2版本[19]计算得到。对于APB1-B岩心，样品深度以岩心内部深度标注，总累加深度置于括号内。"B.P."（Before Present）指代公元1950年之前的年份。APB1-B岩心中5cm深度处的样品（以斜体标注）测得的年龄被视为异常值，未纳入APB1的年龄-深度模型。APB1岩心顶部的不适用情况以n.a.标注。