Origin and evolution of sulphur in the Infra-Molassic Sands Aquifer from the Aquitaine Basin

被引：8

作者：

André, L ^{[1
]}

Franceschi, M ^{[1
]}

Pouchan, P ^{[1
]}

Atteia, O ^{[1
]}

机构：

[1] Univ Bordeaux 3, Inst EGID, F-33607 Pessac, France

来源：

COMPTES RENDUS GEOSCIENCE | 2002年 / 334卷 / 10期

关键词：

Aquitaine Basin; aquifer; isotopes; sulphur; gypsum; pyrite; France;

D O I：

10.1016/S1631-0713(02)01814-X

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

New data on isotopic composition of sulphur and oxygen in dissolved sulphates are used to determine the origin of sulphate ions (SO42-) in the water of the Infra-Molassic Sands Eocene aquifer. Two very distinct origins appear: one is the gypsum dissolution, from the molasse, and the second is the pyrite oxidation, present at the bottom of and within the aquifer. These isotopic analyses helped, in agreement with hydrogeology, to identify geochemical basins whose properties modify the chemical water composition. They also highlight the existence of bioreduction areas.

引用

页码：749 / 756

页数：8

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