2007年3月
Marine reservoir correction for the Pacific coast of central Japan using C-14 ages of marine mollusks uplifted during historical earthquakes
QUATERNARY RESEARCH
- ,
- ,
- 巻
- 67
- 号
- 2
- 開始ページ
- 286
- 終了ページ
- 291
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.yqres.2006.09.003
- 出版者・発行元
- ACADEMIC PRESS INC ELSEVIER SCIENCE
In this study we utilize marine shell samples from two levels of historically uplifted sessile mollusk assemblages and raised wave-cut benches to evaluate the marine reservoir correction (Delta R) for the Pacific coast of central Japan. Elevation measurements of the uplifted marine shells indicate that the lower assemblage emerged during the 1923 Taisho Kanto earthquake (M7.9), whereas uplift of the upper assemblage is most likely but less confidently ascribed to the 1703 Genroku Kanto earthquake (M8.2). Radiocarbon dating of carefully selected samples from the upper and lower assemblages yielded very similar Delta R values of 82 +/- 33 and 77 +/- 32 yr, respectively. We regard the former Delta R value as a representative and more reliable value given the uncertainty in correlation of the upper assemblage with the 1703 earthquake. This result is consistent with previously reported Delta R values for the Pacific coast of south-central Japan and areas around the Sea of Japan that are influenced by warm ocean currents. Radiocarbon dating of coseismically uplifted shells can aid in estimating marine reservoir ages in the tectonically active Japan Islands. (c) 2006 University of Washington. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.yqres.2006.09.003
- ISSN : 0033-5894
- Web of Science ID : WOS:000244621000011