Attrition can also occur in glaciated regions, where it is caused by the movement of ice with embedded boulders over surface sediments.

Another significant feature of Figure 2 is the distinct colour change between surface sediments and those deeper.

Dinocyst distribution is mainly studied through studies of surface sediments.

This is known to be the case for Lingulodinium machaerophorum from culture experiments, and study of surface sediments.

These derive from a phosphatic surface that formed on the sea floor, in the process recrystallizing existing surface sediments.

The adsorbent, loaded with adsorbed pollutant on its surface sediments and forms a bed in the regeneration zone in the cell.

Subtle layering of these rocks can be observed along the slope face seen here, jutting out from under a mantle of surface sediments.

Overall cobalt-60 levels in surface sediment were lower than in 1977, the report says, probably because of dilution caused by strong undersea and currents.

In 1996, concentrations of 16 commonly used pesticides in surface sediment was found including dichloro-diphenyl-trichloroethane (DDT).

This morphological variation is known for Lingulodinium machaerophorum from culture experiments, and study of surface sediments.