Fig. 6. Spatial distribution of (a) MS-2 bacteriophage and (b) bromide on the weathered bedrock trench exposure. Gray shading represents areas stained with dye. Bacteriophage concentrations expressed in log10PFU g-1 with a contour interval of 0.5 log10PFU g-1. Bromide concentrations expressed in milligrams per kilogram, with a contour interval of 15.0 mg kg-1.