What three steps are required for calcareous ooze to exist below the ccd?

For a calcareous ooze to exist below the CCD, the following requirements must be fulfilled:

1. The calcite shells must be deposited above the CCD.

2. The shells must be covered by a non calcareous material.

3. The movement of the sea floor over a long period of time.

CCD stands for Calcite Compensation Depth and it is the ocean depth below which calcite is unstable and will dissolve quickly.