2024-03-29T08:06:28Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00011332
2023-11-16T00:20:32Z
879:1183:1184:1221
<14>^C ages of the core sediments from Suruga trough
駿河舟状海盆底コア資料の<14>^C年代
志岐, 常正
79530
Shiki, Tsunemasa
79531
中井, 信之
79532
Nakai, Nobuyuki
79533
中村, 俊夫
79534
Nakamura, Toshio
79535
1992-03
The roles of various event deposition in the environmental changes of sea floor should be noticed and the method of study should be more fully developed than up to now. From this point of view, we tried to adopt the analysis of variation in the radiocarbon ages of various organic fractions in a turbidite sediment core from the Suruga Trough off Shizuoka, Central Japan. That is, different organic fractions of the plant residues and clastic sediment materials of the same horizon in a core showed relevant ^<14>C ages. From these results, it was assumed that the plant residues in the core originated in river flood and were mixed with older sediments of shallow sea when the sediment layer was overloaded and collapsed forming the turbidity current to the depth of over 2000 meters. Such evnts must have occurred with considerble frequency, that is, several times in one thousand years. For reference, the age of a wood fragment in another pebbly core from the Suruga Trough was measured also. The result reveals that the pebble layer distributed in the Suruga Bay and the Suruga Trough is very recent sediments transported by some kind of gravity flow.
departmental bulletin paper
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
1992-03
名古屋大学加速器質量分析計業績報告書
3
96
103
jpn
http://ci.nii.ac.jp/naid/110000475800/
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
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