1. Calcareous ooze: This type of sediment is primarily composed of the calcium carbonate shells and skeletons of marine organisms, such as foraminifera, coccolithophores, pteropods, and some types of coral. It is typically found in warmer, shallower waters where these organisms thrive.

2. Siliceous ooze: This type of sediment is primarily composed of the silica shells and skeletons of marine organisms, such as diatoms, radiolarians, and silicoflagellates. It is typically found in colder, deeper waters where these organisms thrive.

Let me know if you'd like more detail about either type!