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Table 3 Results of the geotechnical indices for the soil samples in the study area

From: Geotechnical evaluation of gully erosion and landslides materials and their impact in Iguosa and its environs, southern Nigeria

S/n Longitudes Latitudes Samples (SB) location Cohesion (kƿa) Angle of internal resistance (°) Coefficient of permeability (m/s) Liquid limit (LL) Plastic limit (PL) Plastic index (PI) Grain size
1 05°41′23″ 06°27′40″ SB1 28 27 3.6 × 10–4 34 4 30 Sandy clay
2 05°37′43″ 06°29′41″ SB2 27 30 4.0 × 10–4 38 2 36 Sandy clay
3 05°40′10″ 06°28′30″ SB3 10 24 3.0 × 10–4 25 NP NP Coarse grained sand
4 05°37′13″ 06°25′00″ SB4 16 26 2.8 × 10–4 26 NP NP Coarse grained sand
5 05°35′00″ 06° 27′00″ SB5 45 37 4.8 × 10–4 76 36 40 Silty clay
6 05°34′00″ 06°27′01″ SB6 27 28 3.5 × 10–4 33 3 30 Sandy clay
7 05°37′13″ 06°25′00″ SB7 27 30 4.2 × 10–4 38 3 35 Sandy clay
8 05°41′ 30″ 06°27′40″ SB8 12 24 3.2 × 10–4 24 NP NP Coarse grained sand
9 05°37′40″ 06°26′30″ SB9 18 25 2.8 × 10–4 26 NP NP Coarse grained sand
10 05°38′13″ 06°25′00″ SB10 46 40 4.6 × 10–4 76 35 41 Silty clay
     µ = 25.6 µ = 23.70 µ = 3.65 × 10–4 µ = 40.00 µ = 8.30 µ = 21.20  
  1. µ mean, SB samples