1. Soil Texture Triangle

2. Clay Clay Sandy Clay Silty Clay Clay % Silt % Sandy Silty Clay Clayey Silt Clayey Sand Clayey Silty Sand Clayey Sandy Silt CS FSS MS FS Sand Silty Sand Sandy Silt Silt Sand Silt Sand % Alfaro & Chatenet Overlay * gmd – geometric mean mass diameters ** gsd – geometric standard deviations

3. CS FSS MS FS Soil Texture & Alfaro and Chatenet Overlay Triangle

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

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

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

8. Alfaro and Gomes (2001) Model