Subhorizontal fractures in a granitic pluton; their detection and implications for radioactive waste disposal

Abstract

Abstract Lac du Bonnet Batholith in southeastern Manitoba. No radioactive materials, other than sealed sources or tracers, are to be emplaced within this rock body. A high-resolution seismic reflection survey, and information from a number of deep boreholes, demonstrate that major subhorizontal fractures occur at depths of up to 800 m within the batholith. Warm water is flowing up the major fractures from depth.--Modified journal abstract.