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Sources of Deep Ocean-Basin Sediments, continued Chemical Deposits When substances that are dissolved in ocean water crystallize, these materials settle to the ocean floor as potato-shaped lumps of minerals called nodules. nodule a lump of minerals that is made of oxides of manganese, iron, copper, or nickel and that is found in scattered groups on the ocean floor Other minerals, such as phosphates, are also carried in the ocean floor before they crystallize and form mineral deposits on the ...
Biogenous sediments can consist of waste products or remains of organisms, including those of microscopic phytoplankton and zooplankton. When skeletal remains of microscopic organisms make up more than 30% of the sediment, it is called ooze.. There are two types of oozes, calcareous ooze and siliceous ooze.ntroduction Just as ocean beaches display a variety of sediment types, the ocean floor may be made of sand, rock, remains of living organisms, or other material. The grains and particles that make up the seafloor sediments are classified by their size and their point of origin.