| Depth (cm) | OC (g∙kg−1) | CS (g∙cm−3) | CS: HT |
| Coastal Plain Sand |
|
|
|
| 0 - 22 (22) | 6.97 | 1474 | 67 |
| 22 - 44 (22) | 6.73 | 1495.41 | 67.97 |
| 44 - 72 (28) | 5.92 | 1955.97 | 69.86 |
| 72 - 100 (28) | 5.72 | 1985.98 | 70.93 |
| 100 - 180 (80) | 5.34 | 5468.16 | 68.35 |
| Mean | 6.14 | 2475.90 | 68.82 |
| SD | 0.68 | 1690.35 | 1.564 |
| CV | 11.24 | 68.27 | 2.27 |
| Imo Clay Shale |
|
|
|
| 0 - 19 (19) | 15.20 | 3783.28 | 199.12 |
| 19 - 42 (23) | 12.80 | 3473.92 | 151.04 |
| 42 - 82 (40) | 9.20 | 4563.20 | 114.08 |
| 82 - 133 (50) | 8.60 | 5418 | 108.36 |
| 133 - 180 (47) | 7.30 | 4631.85 | 98.55 |
| Mean | 10.62 | 4374.05 | 134.23 |
| SD | 3.273 | 766.7 | 41.35 |
| CV | 30.82 | 17.53 | 30.81 |
| Asu River Group |
|
|
|
| 0 - 15 (15) | 7.66 | 1516.68 | 101.12 |
| 15 - 35 (20) | 5.21 | 1542.16 | 77.11 |
| Mean | 6.44 | 1529.42 | 89.11 |
| SD | 1.73 | 18.01 | 16.9 |
| CV | 26.92 | 1.2 | 19.1 |