[SGC54-P04] High–precision multipoint radiocarbon dating and reconstruction of the eruption history of the Mt. Fuji during the last 8,000 years using sediment cores obtained from the Fuji Five Lakes
Keywords:Mt. Fuji, Radiocarbon dating, Eruptive history, Age model
The radiocarbon dates of bulk sediments and plant fossils indicates the continuous sedimentary environment during the last 8000 year. A high-resolved age model was constructed in Lake Motosu and the validity of the age model was evaluated by Kawagodaira Pumice (3149±12 cal yBP ;Tani et al., 2013). The number of scoria layers in cores was more than previous works on land, suggesting that the analysis of lake sediments could detect small eruptions. Moreover, the analysis of organic matter properties (total organic carbon, total nitrogen, total sulfur content and C / N ratio) indicates the change in supply of organic matters from the lake catchment. We concluded that the analysis of the lake sediments near the volcano is useful for clarifying the history of volcanic eruption, as well as paleoclimate change.
Tani, S., Kitagawa, S., Hong, W., Park, J.H., Sung, K.S., Park, G., 2013. Age Determination of the Kawagodaira Volcanic Eruption in Japan by 14C Wiggle-Matching. Radiocarbon, 55(2-3), 748-752.