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Figure F17. Dissolved chemical concentrations and headspace gas, Hole U1421A. A. Alkalinity. B. pH. C. Sulfate. D. Ammonium. E. Bromide. F. Methane. G. Ethane. H. Silica. I. Salinity. J. Chloride. K. Sodium. Full details of Lithology column are shown in Figure F11 (see “Lithostratigraphy”).

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