overlaps adjacent to output of marine water body sediment marine sediment Particles of marine sediment are primarily generated by 1) processes in terrestrial systems and transported to the marine realm by the action of rivers or aeolian processes (amongst other routes) , 2) marine organisms, 3) chemical processes in seawater, or 4) cosmogeneous input. marine sediments Sediment which has been transported through the marine water column, settling on the seafloor. http://orcid.org/0000-0002-3410-4655 envoPolar sedimentation in a water body