Question: What three steps are required for calcareous ooze to exist below the CCD? Need Assignment Help? deposition of calcite shells below the CCD, cover of these shells by a non-calcareous material, and movement of the sea floor over millions of years deposition of calcite shells above the CCD, cover of these shells by a calcareous material, and stability of the sea floor over millions of years deposition of calcite shells below the CCD, cover of these shells by a calcareous material, and movement of the sea floor over millions of years deposition of calcite shells above the CCD, cover of these shells by a non-calcareous material, and movement of the sea floor over millions of years deposition of calcite shells above the CCD, cover of these shells by a non-calcareous material, and stability of the sea floor over millions of years