Data for: Holocene tephra from the Chukchi-Alaskan margin, Arctic Ocean: Implications for sediment chronostratigraphy and volcanic history

Electronic Supplement Table S1. Electron microprobe analysis data for glass shards: control (non-treated) and treated with cold 10% NaOH for 1 hour, and related geochemical bi-plots. Electronic Supplement Table S2. Glass concentrations in the HLY0501-01 sediments (10 cm intervals, 0.5g of dry.sed.) Electronic Supplement Table S3. Glass concentrations in the HLY0501-01 sediments (2 cm intervals, 0.5g of dry.sed.) Electronic Supplement Table S4. Electron microprobe analysis data for glass shards in the sediment core HLY0501-01. Electronic Supplement Table S5. Amount of glasses of different composition in the individual samples. Electronic Supplement Table S6. Conditions of electron microprobe analyses and data on reproducibility of reference materials. Electronic Supplement Table S7. LA-ICP-MS analyses of single glass shards from sample HLY0501-JPC_42-44 (154-156 cm composite depth) and reference materials

电子补充材料表S1. 玻璃碎屑的电子探针显微分析数据：对照组（未处理组）以及经10%冷氢氧化钠溶液处理1小时的样本组，及相关地球化学双变量图。
电子补充材料表S2. HLY0501-01沉积物中的玻璃碎屑浓度（采样间隔10 cm，称取0.5g干沉积物）。
电子补充材料表S3. HLY0501-01沉积物中的玻璃碎屑浓度（采样间隔2 cm，称取0.5g干沉积物）。
电子补充材料表S4. 沉积物岩芯HLY0501-01中玻璃碎屑的电子探针显微分析数据。
电子补充材料表S5. 单个样本中不同成分玻璃碎屑的数量。
电子补充材料表S6. 电子探针显微分析的实验条件及参考物质的重现性数据。
电子补充材料表S7. 样本HLY0501-JPC_42-44（复合深度154~156 cm）中单颗玻璃碎屑的激光剥蚀电感耦合等离子体质谱（LA-ICP-MS）分析数据及参考物质数据