Figure F3. Concentrations of various dissolved species in interstitial waters from Holes 1231B and 1231E. (A) Alkalinity, (B) dissolved inorganic carbon (DIC), (C) nitrate, (D) manganese, (E) iron, (F) sulfate, and (G) strontium. (H) lithium, (I) barium, (J) total sulfide, (K) acetate, (L) formate, (M) hydrogen, and (N) methane. (O) ammonium, (P) phosphate, (Q) silica, and (R) chloride.