Figure F38. Concentration-depth profile of dissolved silica within interstitial water at Site 1171. The shaded area marks the abundances of radiolarians (barren to common; see "Biostratigraphy"), whereas black horizontal bars indicate poor preservation of radiolarians. Solid squares indicate the presence of opal-CT within the sediments. Approximate locations of lithostratigraphic and biostratigraphic boundaries (see "Lithostratigraphy" and "Biostratigraphy") are indicated. Dashed lines mark depths of pronounced dissolved silica changes.