Table 2 Results of soil analysis on the samples from gully sites of the Nanka Formation in the study
Location of the Gully | Liquid Limit % | Plastic Limit % | Plasticity Index % | Compaction | Permeability cm/s | Shear Strength | Sand % | Silt % | Sediment Description | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
O.M.C Mg/m3 | M.D.D Mg/m3 | Øo | Cohesion kg/cm2 | ||||||||
Ekwolobia 1 | 26.80 | 23.20 | 3.60 | 10.60 | 1.73 | 2.6 × 10–3 | 26.0 | 0.30 | 86.% | 3.0 | Sand/silt |
Ekwolobia 2 | 30.40 | 27.10 | 3.30 | 11.30 | 1.62 | 2.8 × 10–3 | 22.0 | 0.24 | 90.0 | 5.0 | Sand/silt |
Ekwolobia 3 | 36.70 | 28.40 | 8.30 | 10.10 | 1.48 | 2.7 × 10–3 | 28.0 | 0.36 | 93.0 | 2.0 | Sand/silt |
Nanka 1 | 30.90 | 25.80 | 5.10 | 11.50 | 1,60 | 2.4 × 10–3 | 24.0 | 0.23 | 96.0 | 4.0 | Sand/silt |
Nanka 2 | 28.30 | 23.60 | 4.70 | 10.70 | 1.85 | 2.5 × 10–3 | 21.0 | 0.26 | 91.0 | 2.0 | Sand/silt |
Nanka 3 | 27.40 | 24.50 | 2.90 | 9.30 | 1.70 | 2.4 × 10–3 | 25.0 | 0.28 | 92.0 | 1.0 | Sand/silt |
Agule 1 | 28.60 | 20.30 | 8.30 | 8.60 | 1.60 | 2.1 × 10–3 | 26.0 | 0.32 | 87.0 | 3.0 | Sand/silt |
Agule 2 | 32.40 | 26.80 | 5.60 | 10.90 | 1.40 | 3.2 × 10–3 | 24.0 | 0.43 | 89.0 | 2.0 | Sand/silt |
Alor 1 | 31.50 | 25.60 | 5.90 | 11.80 | 2.00 | 3.1 × 10–3 | 23.0 | 0.33 | 90.0 | 3.0 | Sand/silt |
Alor 2 | 29.30 | 24.10 | 5.20 | 11.40 | 1.80 | 2.9 × 10–3 | 27.0 | 0.29 | 95.0 | 4.5 | Sand/silt |
Range | 26.80–36.70 | 20.30–28.40 | 3.30–8.30 | 8.60–11.80 | 1.40–2.00 | (2.1–3.2) × 10–3 | 21.0–28.0 | 0.23–0.43 | 86.0–96.0 | 1.0–5.0 | Sand/silt |
Mean | 30.23 | 24.94 | 5.29 | 10.62 | 1.68 | 2.67 × 10–3 | 24.66 | 0.30 | 90.9 | 2.95 | Sand/silt |