Objectif THE PERMEABILITY STATE OF CLAY MAY BE AFFECTED BY TECTONIC EVENTS. FRACTURES AND FAULTS MAY INDEED GIVE RISE TO A SECONDARY PERMEABILITY WITHIN ARGILLACEOUS ROCKS. OCHRACEOUS BANDS ASIDE FROM THE FRACTURE PLANES EVIDENCE CIRCULATION OF METEORIC WATER WITHIN FRACTURES SYSTEMS IN CLAY. THE PENETRATION DEPTH OF THESE WATER IN CLAY SHOULD REVEAL THE THICKNESS OF CLAY AFFECTED BY SECONDARY PERMEABILITY DUE TO TECTONICS. THE PRESENT WORK IS A CONTRIBUTE AIMED AT ASCERTAINING THE REAL INFLUENCE OF TECTONICS ON CLAY IN PARTICULAR FORMATIONS IN THE SIENA BASIN IN CENTRAL WESTERN ITALY. THE TECTONICS OF THE BASIN, A TYPICAL GRABEN, IS WELL DEFINED. COMPLEMENTARY RESEARCHES IN OTHER SITUATIONS, I.E. IN PASQUASIA MINE, WHERE CLAY ARE HIGHLY FRACTURED, OFFER THE OPPORTUNITY OF INVESTIGATING A CLAY SYSTEM ISOLATED FROM SURFICIAL WATER. THREE MAIN LINES HAVE BEEN ENVISAGED: 1. SELECTION OF THE MOST APPROPRIATE SITUATIONS REFERRED TO THE GENERAL TECTONIC FRAME; 2. STUDIES ON THE VARIATIONS OF THE GEOCHEMICAL SYSTEM OF CLAY BECAUSE OF THE PENETRATION OF THE METEORIC WATER; 3. INVESTIGATION ON THE EXTENT AND CAUSES OF THE SECONDARY PERMEABILITY OF CLAY AND THEIR IMPORTANCE WITH REGARD TO THE GEOCHEMICAL STABILITY OF CLAY FORMATION. Programme(s) FP1-RADWASTOM 3C - Research and development programme (Euratom) on the management and storage of radioactive waste, 1985-1989 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA) Contribution de l’UE Aucune donnée Adresse Via Anguillarese 301 00060 Santa Maria di Galeria (Roma) Italie Voir sur la carte Coût total Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire UNIVERSITA DEGLI STUDI DI PAVIA Italie Contribution de l’UE Aucune donnée Adresse 271 PAVIA Voir sur la carte Coût total Aucune donnée UNIVERSITA' DEGLI STUDI DI SIENA Italie Contribution de l’UE Aucune donnée Adresse SIENA Voir sur la carte Coût total Aucune donnée Università degli Studi di Roma Italie Contribution de l’UE Aucune donnée Adresse Roma Voir sur la carte Coût total Aucune donnée
