Figure 13. A. Dissolved silicate vs. sediment depth. B. Dissolved silicate vs. modern temperature, based on bottom-water temperature and geothermal gradient determined for each site. Symbols, in order of increasing site thermal gradient, are solid circle = Site 1018; gray-shaded plus = Site 1021; plus = Site 1019; open circle = Site 1014; star-like symbol = Site 1013; solid diamond = Site 1017; open diamond = Site 1012; gray-shaded star-like symbol = Site 1022; open triangle = Site 1016; solid square = Site 1011; open square = Site 1010; and cross = Site 1020.

Figure 13. A. Dissolved silicate vs. sediment depth. B. Dissolved silicate vs. modern temperature, based on bottom-water temperature and geothermal gradient determined for each site. Symbols, in order of increasing site thermal gradient, are solid circle = Site 1018; gray-shaded plus = Site 1021; plus = Site 1019; open circle = Site 1014; star-like symbol = Site 1013; solid diamond = Site 1017; open diamond = Site 1012; gray-shaded star-like symbol = Site 1022; open triangle = Site 1016; solid square = Site 1011; open square = Site 1010; and cross = Site 1020.