Community Research and Development Information Service - CORDIS

Abstract

The ARCHIMEDE project fulfilled its objectives and brought insight in the mechanisms of acquisition and regulation of water chemistry in clays. Geochemical models have been proposed to describe local equilibria and global equilibria. Achievement of these objectives first required the development and testing of various methodologies to collect samples and perform the in situ measurements of non-conservative parameters. The in situ measurement of pH and temperature are possible in clay formations when direct sampling is feasible. Those methods are described and discussed in this report.
Among other achievements, the project clearly shows the importance of the control on the drilling chain, sample collection, sample preservation, and analyses because of the speed with which oxidation can take place. Such disturbances outline the important role of accessory minerals in the formation. Two complementary approaches seem to be necessary in detailed microbial investigations, the classic microbial ecology techniques and the innovative molecular biology.

Additional information

Authors: GRIFFAULT L ET AL, Agence Nationale de Gestion des Déchets Radioactifs (FR);MOSSMANN J R, Bureau de Recherche Géologique et Minière (FR);NEERDAEL B ET AL, SCK/CEN, Mol (BE);BEAUCAIRE C, CEA (FR);DAUMAS S ET AL, Guigues Recherche Appliquée en Microbiologie (FR)
Bibliographic Reference: EUR 17454 FR (1997) 176pp., FS, ECU 30.00
Availability: Available from the (2)
ISBN: ISBN 92-827-9046-0
Record Number: 199710143 / Last updated on: 1997-04-01
Category: PUBLICATION
Original language: fr
Available languages: fr