Standard deviations (m) | Areas (% of total) | ||
Alluvial deposits | Marine sediments | Barreiras group | |
0.1 to 1 | 2.5 | 3.2 | 0.4 |
1.1 to 2 | 39.7 | 60.9 | 9.1 |
2.1 to 3 | 28.7 | 35.5 | 34 |
3.1 to 4 | 20.8 | 0.4 | 45.7 |
4.1 to 5.8 | 8.3 | 0 | 10.8 |