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AMS Radiocarbon dating of holocene tephra layers on ulleung Island, South Korea
- Title
- AMS Radiocarbon dating of holocene tephra layers on ulleung Island, South Korea
- Authors
- Okuno M.; Shiihara M.; Torii M.; Nakamura T.; Kim K.-H.; Domitsu H.; Moriwaki H.; Oda M.
- Ewha Authors
- 김규한
- SCOPUS Author ID
- 김규한
- Issue Date
- 2010
- Journal Title
- Radiocarbon
- ISSN
- 0033-8222
- Citation
- Radiocarbon vol. 52, no. 3, pp. 1465 - 1470
- Indexed
- SCI; SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Ulleung Island, a large stratovolcano, is located in the western part of the Japan Sea (East Sea), 130 km off the eastern coast of the Korean Peninsula. The Ulleung-Oki (U-Oki) is a widely distributed tephra in and around the Japan Sea, and has an age of 10.7 cal ka BP obtained from the Lake Suigetsu data set (central Japan). Of the 7 tephra layers (U-7 to -1) on the island, the pumiceous U-4, U-3, and U-2 tephra layers are petrochemically and petrographically similar to the U-Oki tephra. To determine the eruption ages of 3 tephra layers on Ulleung Island, we conducted radiocarbon dating for 5 soil and 2 charcoal samples. Although the soil samples have the C/N ratios from 5 to 10, the obtained 14C dates are still consistent with the tephra stratigraphy of the island. The calibrated 14C dates for the U-4, U-3, and U-2 tephras are 11 cal ka BP, 8.3 or 9 cal ka BP, and 5.6 cal ka BP, respectively, indicating that the explosive eruptions occurred in the island with a time interval of 2000 to 3000 yr during the period of the early to middle Holocene. Based on our chronology, the U-4 tephra is most likely correlated with the U-Oki tephra. © 2010 by the Arizona Board of Regents on behalf of the University of Arizona.
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- 사범대학 > 과학교육과 > Journal papers
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