Isotope fractionations and radiocarbon ages of beach rock samples collected from the Nansei Islands, southwest of Japan

机译：来自日本西南部的Nansei群岛收集的海滩岩石样品的同位素分级和辐射碳碳

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Four hundred and twelve beach rock samples were collected from 157 sites on 29 islands consisting of the Nansei Islands, in the southwestern part of Japan. They were radiocarbon dated and their isotope fractionations (δ~(13)C) were analyzed. The values of isotope fractionations of different materials making up the beach rocks ranged between +9.4 per thousand and —6.0 per thousand with an average of 1.99 per thousand. The isotope fractionations outside the range of 0 ± 2 per thousand suggest that these beach rocks were subjected to the influence of meteoric water when they cemented. Radiocarbon ages suggest that beach rocks in the Nansei Islands began to form about 6,900 yr BP and some of them are at present still under development at the islands.

机译：从29个岛屿的157个地点收集了四百和十二个海滩样本，该岛屿由日本西南部的Nansei岛组成。它们是radiocarbon的日期，分析它们的同位素分级（δ〜（13）c）。构成海滩岩石的不同材料的同位素分馏的值范围在+ 9.4‰之间，平均每千平方为1.99％。在0±2‰的范围之外的同位素分级表明，这些海滩岩石在粘接时受到易患的影响。 RadioCarbon Ages表明，NanSei岛上的海滩岩石开始形成约6,900亿亿桶，其中一些人目前仍在岛上开发。

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《International Conference on Isotopes in Environmental Studies: Aquatic Forum》|2006年||共13页
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作者
Kunio Omoto;
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中图分类环境放射学;
关键词
isotope fractionation; δ~(13)C; radiocarbon dating; beach rock; sea level change; holocene; nansei islands; Japan;

机译：同位素分馏;δ〜（13）c;radiocarbon约会;海滩岩;海平面变化;全新世;Nansei群岛;日本;

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1. Radiocarbon Ages and Isotope Fractionations of Beachrock Samples Collected from the Nansei Islands, Southwestern Japan [J] . Kunio Omoto Radiocarbon . 2004,第2期

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2. Helium isotopes of seawater in adjacent sea of Nansei Islands, Southwest Japan [J] . Takahata N, Watanabe T, Shirai K, Geochemical Journal . 2004,第6期

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3. Avifauna of the Nansei Shoto (Southwest Islands), Japan, in relation to distances among islands [J] . Takagi Masaoki 日本鳥学会誌 . 2009,第1期

机译：日本Nansei Shoto（西南岛屿）的航空动物，与岛屿之间的距离有关
4. Isotope fractionations and radiocarbon ages of beach rock samples collected from the Nansei Islands, southwest of Japan [C] . Kunio Omoto International Conference on Isotopes in Environmental Studies: Aquatic Forum . 2006

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6. Nd-isotopic composition of Phanerozoic sediments in the Inner Zone of Southwest Japan Arc: implications on provenance characteristics and contribution to formation of mature island arc system [O] . Hiroo Kagami, Yoshinobu Kawano, Toshiyuki Ikawa, 2004

机译：日本西南内部区的植物古代沉积物的ND-同位素组成：对成熟岛弧系统形成的出种特征和贡献的影响
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Isotope fractionations and radiocarbon ages of beach rock samples collected from the Nansei Islands, southwest of Japan

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