1. Biogenic Sediments: These sediments are formed from the remains of organisms.
* Calcareous ooze: Made up of the shells and skeletons of marine organisms like foraminifera, coccolithophores, and pteropods.
* Siliceous ooze: Composed of the remains of diatoms and radiolarians, both types of single-celled algae with silica-based shells.
2. Terrigenous Sediments: These sediments originate from land and are transported to the ocean by rivers, wind, glaciers, and gravity.
* Clay: Fine-grained sediment, often transported by rivers and deposited in deep ocean basins.
* Sand: Larger-grained sediment, often deposited on continental shelves and beaches.
3. Hydrogenous Sediments: These sediments are formed by chemical processes within the ocean.
* Manganese nodules: Nodules of manganese, iron, and other metals that form on the seafloor.
* Evaporites: Minerals precipitated from seawater as it evaporates, such as halite (rock salt) and gypsum.