| タイトル | The isotopic composition of Nd in different ocean masses |
| 著者（英） | Piepgras, D. J.; Dasch, E. J.; Wasserburg, G. J. |
| 著者所属（英） | California Inst. of Tech.|Oregon State Univ. |
| 発行日 | 1979-11-01 |
| 言語 | eng |
| 内容記述 | The paper examines the isotopic composition of Nd in marine environments. The Sm-Nd data for authigenic ferromanganese sediments indicate that the Atlantic, Pacific, and Indian Oceans have a distinct range in Nd isotopic composition characteristics of each ocean basin and reflect the dissolved load of Nd in the water mass. Measurements of the Nd isotopic seawater composition of seawater indicate that the rare earth elements (REE) in ferromanganese sediments are derived by direct precipitation of these elements out of seawater. It is believed that the Nd isotopic variations in these sediments represent true variations in the dissolved Nd isotopic composition which reflect the age and (Sm-147)/(Nd-144) ratios of the continental masses sampled believed to be the major source of REE in seawater. |
| NASA分類 | OCEANOGRAPHY |
| レポートNO | 80A20168 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/423330 |
