type | Sedimentary genetic type | Thickness (m) | Width (m) | Length-width ratio |
Class I | Flood mudstone | 1 - 4, average 2.1 | 300 - 800 | 1.8 - 3.2:1 |
Class II | Abandoned river course and mud between dams | 0.5 - 2.1, average 1.1 | <300 | 2.5 - 4.2:1 |
Class III | Muddy channel/silt layer | 0.1 - 0.6, average 0.3 | <100 | - |