Eolian soils are characterized by what type of particle size?

Eolian soils are primarily formed from the transportation and deposition of materials by wind, which naturally favors finer particles. Consequently, these soils are typically composed of fine sand or silt. The lightweight nature of these particles allows them to be easily picked up and carried over long distances by wind action, leading to their accumulation in distinct geographic locations.

The fine sand and silt size range allows for significant aeration and drainage, which are important characteristics of eolian environments. Such particle sizes are less prone to compaction, enabling the soil to maintain an open structure that supports certain types of vegetation and allows for good water infiltration.

In contrast, the other particle size options, such as clayey and heavy, coarse gravel, or mixed textures, do not align with the characteristics of eolian soils. Clay particles are heavier and more cohesive, making them less likely to be moved by wind. Coarse gravel is too large to be carried by wind effectively, as are mixed textures that would include a broader range of sizes not typically found in eolian deposits.