Impacts are the dominant process shaping the regoliths of most airless solar system bodies. The impact process that controls the particle size and shape distribution of, for example, lunar soils… Click to show full abstract
Impacts are the dominant process shaping the regoliths of most airless solar system bodies. The impact process that controls the particle size and shape distribution of, for example, lunar soils is both destructive (comminution) and constructive (agglutinization) and is very different from processes that form terrestrial soils or result from grinding analogs in a mortar and pestle. Describing particle shapes as ‘irregular’ is only a qualitative description, and there are an infinite number of quantitatively different shapes that are irregular.
               
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