11. Interstellar plutonium-244 has been detected in meteorite dust in marine sediments . 12. They usually live in marine sediments , although they can live elsewhere. 13. Anaerobic oxidation of methane ( AOM ) mainly occurs in anoxic marine sediments . 14. These processes have been observed in marine sediments , anaerobic sludge and contaminated aquifers. 15. Those rocks were laid down as marine sediments about 248 million years ago. 16. Clayey marine sediments were deposited at the bottom of the water. 17. A thin clay-rich horizon marks ETM-2 in marine sediment from widely separated locations. 18. Fossil land plants are recorded in terrestrial, lacustrine, fluvial and nearshore marine sediments . 19. This process is also considered a major sink for sulfate in marine sediments . 20. It is an anaerobic dehalogenating bacterium first isolated from marine sediments .
