HIGH PRECISION TEPHROCHRONOLOGICAL APPLICATIONS USING LASER ABLATION ICP-MS

Grain specific major and trace element geochemistry by EPMA and Laser Ablation ICP-MS on single volcanic ash shards from the ~3300 ¹⁴C yr BP or mid-second millennium BC ‘Minoan’ eruption of Santorini (Thera) is presented in this poster. The analysed tephra was extracted from a sediment core retrieved from Gölhisar Gölü, a small intramontane lake in southwest Turkey at a depth of 275 cm. The importance of accurate grain specific major and trace element geochemical data is examined and discussed in light of new geochemistry results of ice embedded tephra from the GRIP and GISP ice cores.