Composition isotopique du strontium d'eaux interstitielles extraites de sédiments récents: un argument en faveur de l'homogénéisation isotopique des minéraux argileux |
| |
| Authors: | Norbert Clauer Michel Hoffert Daniel Grimaud Georges Millot |
| |
| Institution: | 1. Centre de Sédimentologie et Géochimie de la Surface (C.N.R.S.), Institut de Géologie de l''Université Louis Pasteur, 1, rue Blessig, 67084—Strasbourg, Cédex, France;2. Laboratoire de Géochimie des Eaux, Université de Paris VII, Tour 53-54, 2, Place Jussieu, 75221—Paris, France |
| |
| Abstract: | The ratio of interstitial waters squeezed from recent sediments of the Pacific Ocean increases from 0.70920 ± 0.00017 (2σ) to 0.70960 ± 0.0023 and 0.70984 ± 0.00040 at 1.50 and 1.60 m depth—reference value for sea water: 0.70910 ± 0.00035. This variation underlines the likely existence of exchanges between the clays and the interstitial environment. The isotopic homogenization of strontium between the clays and their environment, result of these changes, becomes thus a credible phenomenon. This is a new argument for the dating of clays by the method. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
