Linked from
The 10 pages that link to Carbonate compensation depth, each with the reason it gives.
CalciteRelated: It controls where calcite shells and sediments can persist on the deep seafloor.
CarbonateRelated: It marks where seafloor carbonate sediments cease to persist.
AcidityRelated: Greater ocean acidity favors carbonate dissolution and can shift this boundary.
AragoniteRelated: Aragonite dissolution contributes to this boundary in marine sediments.
Carbonate rockRelated: It controls where carbonate sediment can persist on the deep seafloor.