Huang Ting, Mao Xu-mei, Cheng Sheng-Gao, Hu Zhong-Xia, Gong Peng
Proceedings of the 14th International Peat Congress
Theme I. Inventory, stratigraphy and conservation of mires and peatlands
Two layers of Holocene volcanic ash have been discovered in Northeast, China. Combined with the 14C dating data of peat cellulose, using the age-depth modeling, the age of tephra layers have been calculated. The analysis of characteristics petrographically and the geochemical composition indicates that one layer of tephra is from the Long-gang volcano group in 2002–1976a B.P. (Calibrated age); another layer of tephra is probably from Towada (Japan) volcanic eruption in 8352±76–9604±80a B.P. (Uncorrected age). Compared volcanic eruption events in δ 18O and δ 13C curves of peat cellulose, the results show that peatland can conserve Holocene widely volcanic eruption events, and these eruptions responded to the minimum temperature and humidity. Therefore, it is a feasible method to analyze the relationship between the climate changes and volcanic eruptions which are recorded in peatland.