Deep Life and Gases in the Outokumpu Deep Borehole: Baseline Information for Nuclear Waste Disposal in Crystalline Rock

摘要

Results of microbiological and geochemical sampling in the Outokumpu deep (2.5 km) borehole are presented. The results indicate that the discharging fractures control the observed variations in the microbial populations at different depths, which evidently reflect true variations in the microbial populations in fractures of the crystalline bedrock.