Table S1 from Centennial-scale gaps in a 5,500-year Acroporid growth trajectory from a Caribbean coral reef

1. Samples analyzed by ID-MC-ICPMS using a spike of 233U (IRMM-051) and 229Th, of high purity calibrated against solutions of Uranite in secular equilibrium (Harwell Uraninite, and U Ore from Schwartzwalder Mine), following the methodology of separation and purification of U and Th in ref 69. 2. The activity ratios were calculated considering the decay constants for 230Th and 234U reported by Cheng et al EPSL 2013, for 238U reported in ref. 71, and 232Th in ref. 72. The same constants were used for the age calculation, using ISOPLOT-R (ref. 75). 3. The "raw" ages were corrected for the contribution of detrital Th using a two-point isochron, considering the atomic ratio 232Th/238U of the detrital fraction similar to that of the Earth's crust = 3.8 +/- 1.2 (ref. 73), and with [230Th/238U] and [234U/238U] equal to 1.0 +/- 0.1 (ref. 74) 4. d234U refers to the permil deviation from equilibrium considering isotopic abundances reported in ref. 70. 5. d234Uo (o [234U/238U]o) corresponds to the initial U isotopic composition, calculated from the [234U/234U] value. 6. All reported uncertainties during age calculation correspond to +/- 2 SE (standard error) and have been propagated using a Monte Carlo approximation (ref. 74). 7. Correlation of errors is essentially = 0

1. 本数据集的样品均采用同位素稀释-多接收杯电感耦合等离子体质谱法（ID-MC-ICPMS）分析，以高纯度的233U（IRMM-051）和229Th作为同位素稀释剂；铀与钍的分离纯化流程遵循参考文献69的方法，校准工作基于长期同位素平衡态下的晶质铀矿（Uraninite）溶液完成，该溶液包括哈威尔晶质铀矿以及施瓦茨瓦尔德矿的铀矿石。
2. 活度比的计算基于Cheng等人2013年发表于《地球与行星科学通讯》（Earth and Planetary Science Letters，EPSL）的230Th与234U衰变常数，以及参考文献71中的238U衰变常数、参考文献72中的232Th衰变常数；年龄计算采用ISOPLOT-R软件（参考文献75），并使用上述衰变常数。
3. 采用两点等时线法对“原始”年龄进行校正，以扣除碎屑钍的贡献；其中碎屑组分的232Th/238U原子比与地壳平均值一致，为3.8±1.2（参考文献73），且[230Th/238U]与[234U/238U]比值均为1.0±0.1（参考文献74）。
4. d234U指相对于同位素平衡状态的千分偏差，其计算依据参考文献70报道的同位素丰度数据。
5. d234Uo（即初始(234U/238U)o比值）对应初始铀同位素组成，其值由(234U/238U)o计算得到。
6. 本数据集所报道的所有年龄计算不确定度均为±2倍标准误（standard error，SE），且采用蒙特卡洛近似法进行误差传递（参考文献74）。
7. 误差相关性基本为0。