Radiocarbon Ages and Isotope Fractionations of Beachrock Samples Collected from the Nansei Islands, Southwestern Japan
Radiocarbon Ages and Isotope Fractionations of Beachrock Samples Collected from the Nansei Islands, Southwestern Japan
复制标题
从日本西南部南西群岛采集的海滩岩石样本的放射性碳年龄和同位素分馏
DOI：
10.1017/s0033822200035591
复制
发表时间：
2004
期刊：
影响因子：
8.3
通讯作者：
K. Omoto
中科院分区：
文献类型：
--
作者：
K. Omoto
总共从日本西南部南洋群岛链15个岛屿的116个地点采集了294个海滩岩石样本，并进行了放射性碳年代测定。海滩岩大约在公元6900年左右开始形成，其中一些仍在岛屿上开发。组成海滩岩的不同物质的同位素分馏数值介于+9.4‰和−5.7‰之间。在0±2‰范围外的同位素分馏表明，这些海滩岩胶结时受到地下水和流动淡水的强烈影响。至少在过去的5000年里，全新世晚期的海平面一直保持不变，除了几个抬升的海岸。
A total of 294 beachrock samples were collected from 116 sites on 15 islands in the Nansei Islands chain, southwestern Japan, and were radiocarbon dated. The beachrocks began to form at about 6900 BP and some are still under development in the islands. Values of isotope fractionations of different materials making up the beachrocks ranged between +9.4‰ and −5.7‰. Isotope fractionations outside the range of 0 ± 2‰ suggest that these beachrocks were strongly influenced by underground water and running freshwater when they were cemented. The sea level during the late Holocene has remained the same for at least the past 5000 yr, except for several uplifted coasts.
影响因子：
8.3
作者：
STUIVER, M;POLACH, HA
通讯作者：
POLACH, HA