Fig. 3. Variation in redox profiles at 100 percent PAL and tropical locales in the upper 300 m of the oceans as a function of climatically determined depth of deep ventilation:
(A) non-glacial global climate with the base of the pycnocline/thermocline at 3000 m;
(B) pre-- or post-glacial global climate with the base of the main pycnocline/thermocline at 1500 m,
(C) glacial global climate with the base of the main pycnocline/thermocline at 100 m.

Figure Three