Aeolianite is a type of sedimentary rock formed from the lithification of wind-blown (aeolian) sands. These rocks are typically composed of quartz grains and are found in coastal and desert environments. Aeolianites are important indicators of past climatic conditions and wind regimes and are studied to understand sedimentary processes in arid regions.
Reference: Brooke, B. (2001). “The Distribution and Formation of Coastal Aeolianite.” Earth-Science Reviews, 55(1-2), 135-164.