Figure 16. Comparison of k.y.-scale CaCO3 MAR events at Site 1020 to CaCO3 rain measured by sediment traps and to our calculations of CaCO3 burial at calcite saturation (see text). Carbonate events CC 2-1 and CC 5-2 are larger than the modern CaCO3 rain and must have been caused by changes in CaCO3 production. A majority of the other k.y.-scale events are larger than the CaCO3 MAR when deep ocean waters are saturated with respect to CaCO3 and are most probably caused by changes in CaCO3 production.

Figure 16. Comparison of k.y.-scale CaCO₃ MAR events at Site 1020 to CaCO₃ rain measured by sediment traps and to our calculations of CaCO₃ burial at calcite saturation (see text). Carbonate events CC 2-1 and CC 5-2 are larger than the modern CaCO₃ rain and must have been caused by changes in CaCO₃ production. A majority of the other k.y.-scale events are larger than the CaCO₃ MAR when deep ocean waters are saturated with respect to CaCO₃ and are most probably caused by changes in CaCO₃ production.