Biogenic sediment is a type of sediment that forms from the remains of living organisms. This includes materials like shells, bones, and plant debris that accumulate over time in various environments, such as oceans, lakes, and riverbeds. The organic matter in biogenic sediment can provide important information about past ecosystems and climate conditions. Common examples of biogenic sediment include calcareous ooze, which is made up of the shells of marine organisms like foraminifera and coccolithophores, and siliceous ooze, formed from the remains of organisms such as diatoms and radiolarians. These sediments play a crucial role in the carbon cycle and can influence the geological features of the Earth.