1. The calcium sulphate was probably concentrated by evaporation of shallow lakes, though wind-borne gypsum dust may have contributed in places.

2. 11 The calcium sulphate was probably concentrated by evaporation of shallow lakes, though wind-borne gypsum dust may have contributed in places.

3. Aeolian or Eolian refers to things related to Aeolus, the Greek God of wind and patriarch of the Greeks of Aeolia.Specific items include: Aeolian Islands, islands in the Tyrrhenian Sea; Aeolian or Aeolic order, an early order of Classical architecture; Aeolian processes, wind-generated geologic processes; Aeolian dust, atmospheric or wind-borne dust