Figure F27. A zone of authigenic carbonate formation from 190 to 310 mbsf (green shading) is inferred from the downhole distribution of alkalinity, calcium, magnesium, and strontium. Sediments within this zone are also characterized by an increase of biogenic CaCO3.

Figure F27. A zone of authigenic carbonate formation from 190 to 310 mbsf (green shading) is inferred from the downhole distribution of alkalinity, calcium, magnesium, and strontium. Sediments within this zone are also characterized by an increase of biogenic CaCO₃.