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нефтегазовая промышленность
пелагические осадки
['sedimənt]
общая лексика
осадок
отстой
нанос
отложение
отстойный
седиментационный
множественное число
наносы, отложения
нефтегазовая промышленность
осадок, отстой, гуща на дне
осадочная порода
вода и грязь из нефти
нефтяная эмульсия
осадочные отложения, наносы
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существительное
['sedimənt]
общая лексика
осадок
отстой
осадок, отстой
геология
отложение
осадочная порода
осадочная порода, отложение
глагол
общая лексика
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отстой
Pelagic sediment or pelagite is a fine-grained sediment that accumulates as the result of the settling of particles to the floor of the open ocean, far from land. These particles consist primarily of either the microscopic, calcareous or siliceous shells of phytoplankton or zooplankton; clay-size siliciclastic sediment; or some mixture of these. Trace amounts of meteoric dust and variable amounts of volcanic ash also occur within pelagic sediments. Based upon the composition of the ooze, there are three main types of pelagic sediments: siliceous oozes, calcareous oozes, and red clays.
The composition of pelagic sediments is controlled by three main factors. The first factor is the distance from major landmasses, which affects their dilution by terrigenous, or land-derived, sediment. The second factor is water depth, which affects the preservation of both siliceous and calcareous biogenic particles as they settle to the ocean bottom. The final factor is ocean fertility, which controls the amount of biogenic particles produced in surface waters.