A great volcanic eruption around AD 1300 recorded in lacustrine sediment from Dongdao Island, South China Sea
The contents of Ti, Al and Fe 2 O 3 in a lacustrine sediment core (DY6) collected from Dongdao Island, South China Sea (SCS), were determined to be much higher than those in the three major sediment end-members (coral sand, guano and plants), and their likely sources include terrigenous dust and volcanic ash. At 61 cm (∼AD 1300), the contents of Ti, Al and Fe 2 O 3 have an abnormally high spike, which cannot be explained by terrigenous dust. The Sr and Nd isotope compositions at 61 cm are in excellent agreement with those in volcanic materials, but they are significantly different from those in terrigenous dust, implying a possible material input from historical volcanic eruptions in the lacustrine sediment DY6. The documented great Samalas volcanic eruption at AD 1257 in Indonesia is likely the candidate for this volcanic eruption.
KeywordsSouth China Sea element analysis Sr and Nd isotope compositions volcanic ash AD 1257 Samalas
The research was supported by ‘Strategic Priority Research Program’ of the Chinese Academy of Sciences (XDA11030104) and Key Research Program of the Chinese Academy of Sciences (KZZD–EW–TZ–15–2). We are grateful to the P R China troops in Xi–Sha atoll for their assistance in sampling.
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