The Carbonate Cycle

The carbonate cycle involves the movement of carbon atoms through rocks, sediments, and the ocean. When organisms like shellfish and coral die, their calcium carbonate shells settle on the ocean floor, forming sediments. Over millions of years, these sediments can turn into limestone and other rocks. Volcanic activity and weathering of rocks release carbon back into the atmosphere and oceans, maintaining a balance. This cycle helps regulate Earth’s carbon levels, impacting climate and supporting marine life. It operates over long timescales and links geological processes with the environment.