Figure F6. Measured percentages of illite in I/S mixed-layer clays at Sites 808, 1173, 1174, and 1177, based on the d-value of I(002)/S(003) reflections. Solid lines represent numerical simulations of illite-smectite reaction progress using the kinetic model of Huang et al. (1993). Model inputs include paleomagnetic and nannofossil age-depth constraints (Table T3), potassium concentration from pore water measurements (Shipboard Scientific Party, 1991, 2001c, 2001d, 2001e), and temperature calculated from thermal conductivity data and heat flow (Shipboard Scientific Party, 1991, 2001c, 2001d, 2001e; Fisher et al., 1993). Projected borehole temperatures for Site 1177 were calculated using heat flow from Deep Sea Drilling Project Site 582 (Shipboard Scientific Party, 1986).

Figure F6. Measured percentages of illite in I/S mixed-layer clays at Sites 808, 1173, 1174, and 1177, based on the d-value of I(002)/S(003) reflections. Solid lines represent numerical simulations of illite-smectite reaction progress using the kinetic model of Huang et al. (1993). Model inputs include paleomagnetic and nannofossil age-depth constraints (Table T3), potassium concentration from pore water measurements (Shipboard Scientific Party, 1991, 2001c, 2001d, 2001e), and temperature calculated from thermal conductivity data and heat flow (Shipboard Scientific Party, 1991, 2001c, 2001d, 2001e; Fisher et al., 1993). Projected borehole temperatures for Site 1177 were calculated using heat flow from Deep Sea Drilling Project Site 582 (Shipboard Scientific Party, 1986).