A soft substratum where grainsizes of 0.0039 – 0.0625 mm in any dimension are dominant (i.e. account for ≥ 80 % of the soft substratum composition).
A soft substratum where grainsizes of 0.0039 – 0.0625 mm in any dimension are dominant (i.e. account for ≥ 80 % of the soft substratum composition).