Isotopic Characteristics and Age Dating of the Pumice in Okinawa Trough
文献类型：CNKI期刊论文
| 作者 | Chen LR(陈丽蓉); Zhai SK(翟世奎); Shen SX(申顺喜) |
| 发表日期 | 1994-07-15 |
| 出处 | Science in China(Series B)
 |
| 关键词 | back-arc magmatism isotope age Okinawa Trough |
| 英文摘要 | <正> The data on the isotope compositions of rubidium,strontium and oxygen in the pumice ofOkinawa Trough are reported for the first time.The ages of the pumice were successfully dated with themethod of U-series disequilibrium.Then,the material source,crystallization evolution of magma and activi-ty cycles of volcanos are explored.Isotopic data show that pumice magma was originally from the mantle,but had undergone a full crystal-lization differentiation and had been contaminated to a fair extent by crust-derived materials before the mag-ma was erupted out of the sea floor.According to the dating results available so far,the earliest volcaniceruption in Okinawa Trough occurred about 70,000 a ago and the latest eruption was about 10,000 a B.P.During this period,there were three volcanic eruption cycles which were respectively corresponding to themiddle Late Pleistocene,the late Late Pleistocene and the Early Holocene. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Natural Science Foundation of China. |
| 卷 | v.37期:07页:104-112 |
| 语种 | 英文; |
| 分类号 | P597.3 |
| ISSN号 | 1001-652X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/195623]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | InstituteofOceanology,AcademiaSinica |
| 推荐引用方式 GB/T 7714 | Chen LR,Zhai SK,Shen SX. Isotopic Characteristics and Age Dating of the Pumice in Okinawa Trough. 1994. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。