carbonate sediments
Carbonate sediments are formed in shallow, warm oceans either by direct precipitation out of seawater or by the biological extraction of calcium carbonate from seawater to form skeletal material. The sediment is, therefore, composed of varying sizes and shapes of particles that are mixed together, creating a variety of textures. This sediment may be bound together by encrusting organisms or deposited loosely and subject to transport by ocean currents.
