gyttja

The gyttja then slowly drains to the bottom of the column.

Gyttja can form in layers reflecting changes in the environment as with other Sedimentary rock.

The lake sediments consist of calcareous organic gyttja, ostracode-rich silts and clays.

Gyttja accumulates as long as new material is added to the top of the column and the conditions are right for anaerobic degradation of the peat.

Lake Waccamaw has a broad, flat bottom of gyttja (mud) and peat encircled by sandy shallows and submerged sandy terraces that extend up to 500 m offshore.

As the peat is buried under new peat or soil the oxygen is reduced, often by water logging, and further degradation by Anaerobic microbes, Anaerobic digestion can produce gyttja.

The organic gyttja (unit I) and ostracode-rich layers (units III and V) are characterized by high organic and carbonate concentrations but low values, suggesting relative stability within the catchment.