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Jeju Island, the largest Quaternary volcanic island in Korea, has formed mostly since the early Pleistocene, but its latest chronology of volcanism and sedimentation is still poorly constrained. Here we report optically stimulated luminescence (OSL) ages for two hydromagmatic volcanoes on the southwestern coast of Jeju Island, i.e., the Songaksan and Suwolbong tuff rings. The basaltic tuffs of these...
Optically stimulated luminescence (OSL) from quartz is now widely applied to the dating of Quaternary sediments. Unfortunately, quartz OSL ages are often limited to 100–200ka by the saturation level of the dose–response curve (∼300Gy), unless the annual dose from the surrounding sediments is sufficiently low. Quartz thermoluminescence (TL) has been used in the past to date beyond this range, but this...
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