👉 The term "eriocaulaceous" is often used in geology to describe a type of sedimentary rock that is composed mainly of calcareous minerals, such as calcite and dolomite. This type of rock is characterized by its relatively high porosity (the amount of free water present) compared to other types of sedimentary rocks. Eriocaulaceous sediments are typically found in basaltic volcanic regions or in the basement layers of metamorphic rocks.