Questions: What is the depth at which carbonate begins to dissolve called? How about the depth were all carbonate dissolves completely?

The depth at which carbonate begins to dissolve is called the Carbonate Compensation Depth (CCD). This is the depth in the ocean below which the rate of carbonate accumulation is less than the rate of carbonate dissolution, meaning that carbonate materials such as calcium carbonate (CaCO₃) begin to dissolve more rapidly.

The depth at which all carbonate dissolves completely is known as the Lysocline. This is the depth in the ocean where the rate of dissolution of carbonate increases significantly, leading to the complete dissolution of carbonate materials.

In summary:

• The depth at which carbonate begins to dissolve is called the Carbonate Compensation Depth (CCD).
• The depth at which all carbonate dissolves completely is called the Lysocline.