estuarine

The site was estuarine, which means fresh and salt waters were mingling.

Slowly this sea shallowed, giving rise to the alternating estuarine marine and freshwater deposits of the Coal Measures.

Thus in these lowland or estuarine peat-mosses the moss eventually occupies the water, and goes on growing.

The chief interest in estuarine conditions is the mingling of sea and fresh water.

We might therefore expect to find coal wherever strata of estuarine origin are developed in great mass.

Whether these are marine, lacustrine, or estuarine deposits, there is hardly sufficient evidence to show.