Figure 2. Downcore profiles of alkalinity, SO42–, and NH4+ in interstitial waters of sites drilled during Leg 175 (except Site 1087; see text). All panels for a given dissolved constituent are plotted to a common scale on the abscissa and to the identical depth scale. For complete profiles to total depth at a given site, please refer to the individual site chapters (this volume). Note off-scale values of alkalinity and dissolved NH4+ at Site 1084; please refer to Figure 6 for discussion of this site. The concentration values of total organic carbon (TOC) in the sediments (in weight percent) are taken from the "Organic Geochemistry" sections of the individual site chapters (this volume).