The date of last large eruption of Changbaishan-Tianchi volcano and its significance |
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| Authors: | Ruoxin Liu Shihua Qiu Lianzhen Cai Haiquan Wei Qingfu Yang Ziqiang Xian Guancheng Bo Jian Zhong |
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| Institution: | (1) State Seismology Bureau, Institute of Geology, 100029 Beijing, China;(2) Chinese Academy of Social Sciences, Institute of Archaeology, 100006 Beijing, China;(3) Seismology Bureau of Jilin Province, 130022 Changchun, China |
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| Abstract: | The systematical14C age of a large gagatite, which has been found in the purniceous airfall deposits of the last large eruption of Changhaishan-Tianchi
volcano, is dated from its centre to its edge. By fitting the14C age with the high precise calibrated curve of tree ring, it IS concluded that t h r date of the last large eruption is (1215±15)
AD. In addition, the climatic effects of that large eruption are also discussed. pointing out that the last large eruption
probably corresponds to the sulfuric acid peak at (1227 ± 2) AD in GISP2 Greenland ice core.
Project supported by the National Uatural Sc~ence Foundatlon of Chlna (Grant No 49672109) |
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| Keywords: | Changbaishan-Tianchi volcano date of large eruption 14C dating global climate change |
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