U-Pb Isotopic ratio measurements of zircon grains from the Peruvian continental margin (Pisco Basin)

U-Pb Isotopic ratio measurements of zircon grains from two ash samples outcropping in the Pisco Basin (MG11-10; 14°11.13'S, 76°08.65'W; MG11-60; 14°11.17'S, 76°6.99'W). Analyses were carried out University of Florida, using a Nu-Plasma® Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometer (LA-MC-ICP-MS). Data reduction was referenced to standard zircon (FC-1) from the Duluth Gabbro dated at 1099.0 ± 0.7 Ma and 1099.1 ± 0.5 Ma (Black et al., 2004). Single-ages are reported in Million of years (Ma) with standard error uncertainties at 2σ and 95% confidence intervals. Ash beds were collected as a tool for determining U-Pb maximum depositional ages by DO and TdV in 2022.采自皮斯科盆地（Pisco Basin）两处露头火山灰样品（MG11-10；南纬14°11.13'，西经76°08.65'；MG11-60；南纬14°11.17'，西经76°6.99'）中锆石颗粒的U-Pb同位素比值测定数据。本次分析由佛罗里达大学（University of Florida）完成，使用Nu-Plasma® 激光剥蚀多接收器电感耦合等离子体质谱仪（LA-MC-ICP-MS）。数据处理以采自苏必利尔湖辉长岩（Duluth Gabbro）的标准锆石FC-1为参考标准，该标准锆石的定年结果为1099.0 ± 0.7 Ma与1099.1 ± 0.5 Ma（Black等，2004）。单颗粒锆石年龄以百万年（Ma）为单位报道，误差以2σ标准误表示，对应95%置信区间。2022年由DO与TdV采集该批火山灰层，用于通过U-Pb定年确定最大沉积年龄。