hemipelagic sediment

hemipelagic sediment

[¦he·mē·pə′laj·ik ′sed·ə·mənt]
(geology)
Deposits containing terrestrial material and the remains of pelagic organisms, found in the ocean depths.
References in periodicals archive ?
Leg 146 recovered advanced piston cores from a basin in the California borderland that is characterized by a very high deposition rate of hemipelagic sediment.
Since the early days of the ocean drilling programs, an important objective has been to provide the means to decipher the record of terrigenous material in pelagic and hemipelagic sediment accumulations.
Detailed stratigraphic work in the Shimanto belt of Japan, for example, showed an orderly sequence before disruption: oceanic basement (basalts), pelagic sediments, hemipelagic sediments with silicic tephras and muddy turbidites, and coarser grained turbidites, basically similar to that found in the Nankai Trough.