Data for: First identification of cryptotephra from the Kamchatka Peninsula in a Greenland ice core: implications of a widespread marker deposit that links Greenland to the Pacific northwest

EPMA and LA-ICP-MS analyses with standards采用标准物质的电子探针显微分析（Electron Probe Micro-Analysis, EPMA）与激光剥蚀电感耦合等离子体质谱（Laser Ablation Inductively Coupled Plasma Mass Spectrometry, LA-ICP-MS）分析