Ocean chemistry and deep-sea sediments

Summary:Deep-sea sediments are a mixture of biogenic and terrigenous sediments, withminor volcanogenic and extraterrestrial contributions.Submarine topography and ocean currents determine their distribution.Pelagic sediments are mainly composed of the remains of calcareous and siliceoussediments with a mixture of eolian sediments.Hemipelagic sediments such as glaciomarine sediments are a mixture ofterrigenous sediment input from nearby continents and marine sediments.Wind blown dust can travel long distances while river derived sediment settledown on continental margins.Clay mineral compositions can be useful in determining climate zones ortransport pathways.IRD sediments help to identify major iceberg transport pathways and icesheetcollapse.