Knowledge of the three French underground laboratory sites |
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| Authors: | Patrick Lebon and Bernard Mouroux |
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| Institution: | ANDRA, 1–7 rue Jean Monnet, Parc de la Croix Blanche, 92298 Chatenay-Malabry, France |
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| Abstract: | From March 1994 to August 1996, ANDRA conducted a large reconnaissance work on three sites for possible underground research laboratories. These surveys highlighted for each site the presence of a geological formation, the properties of which meet the requirements of the French Fundamental Safety Rules. On the East site, the selected formation is a 130 m thick argillite layer. On the Gard site the layer is composed of close-packed siltites which are 200–400 m thick. On the Vienne site a hercynian granodiorite batholith was found under a 160 m thick jurassic overdurden. |
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| Keywords: | Deep geological disposal site screening Nuclear wastes Rock properties Surface investigations |
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