Hydrogenous sediments of the deep-ocean floor predominate in regions where other sediment sources are reduced.

Question

Quizplus · Accepted Answer

Hydrogenous sediments, which are made up of minerals that precipitate from seawater, typically form in areas where there is little input of terrigenous (land-derived) or biogenic (organic) sediment. Hydrogenous sediments can form from a variety of processes, including chemical reactions between seawater and volcanic rocks, and from reactions between seawater and metal-rich fluids discharged from the seafloor. Therefore, they tend to accumulate in areas where these processes are most active, which may be in the vicinity of underwater volcanoes, hydrothermal vents, or other sources of fluid flow.

Hydrogenous Sediments of the Deep-Ocean Floor Predominate in Regions Where