1. Soil Texture Triangle

2. Sand % Silt % Clay % Clay SiltSand Silty Clay Clayey Silt Sandy Clay Clayey Sand Silty SandSandy Silt Sandy Silty Clay Clayey Sandy Silt Clayey Silty Sand Alfaro & Chatenet Overlay Aggregate Populations gmd* (µm)gsd** FSS1251.6 FS2101.8 MS5201.6 CS6901.6 *gmd – geometric mean mass diameters **gsd – geometric standard deviations

3. Soil Texture & Alfaro and Chatenet Overlay Triangle

4. Sand % Silt % Clay % Wind Erodibility Group Triangle 4 7 1 6 2 3 4L 5

5. 4 7 1 6 2 3 5 Wind Erodibility Group & Soil Textures Overlay Triangle

6. Sand % Silt % Clay % Clay SiltSand Silty Clay Clayey Silt Sandy Clay Clayey Sand Silty SandSandy Silt Sandy Silty Clay Clayey Sandy Silt Clayey Silty Sand 4 7 1 6 2 3 4L 5 Wind Erodibility Group, Alfaro and Chatenet, & Soil Textures Overlay Triangle

8. Alfaro and Gomes (2001) Model