| List I (Soil Colour) | List II (Characteristic compound) | ||
| A. | Black | I. | Organic matter and Iron Oxides |
| B. | Red/Brown/Yellow | II. | Quartz |
| C. | Brown | III. | Titeniferous and magnetite compounds |
| D. | White/Lighter colours | IV. | Iron and manganese oxides |
| LIST I | LIST II | ||
| A. | Ox-bow lake | I. | Wind |
| B. | Playa | II. | Glacier |
| C. | Cirque | III. | River |
| D. | Dunes | IV. | Lake |