Table 1 A summary of discontinuities’ characterization in the study area
Site ID | Locality | Rock type | Fracture set | No. of fractures | Strike | Dip | Average fracture spacing (m) | Fracture infilling |
|---|---|---|---|---|---|---|---|---|
002 | Itigidi | Sandstone | JC-1 | 30 | 300–310 | 80–90 | 1.5 | Ferruginized |
006 | Aboine River Akpoha | Shale | JT-1 | 38 | 340–355 | 80–90 | 0.1 | None |
JT-2 | 8 | 310–320 | 85–90 | 0.3 | ||||
JT-4 | 3 | 260–270 | 80–90 | 2.0 | ||||
008 | Amaseri Ridge | Sandstone | JT-1 | 5 | 330–360 | 80–90 | 0.7 | None |
JS-1 | 9 | 045–060 | 45–60 | 1.5 | ||||
012 | Ohaozara | Sandstone | JT-1 | 40 | 330–350 | 85–90 | 0.15 | None |
013 | Asu River Ohaozara | Shale | JT-1 | 156 | 330–360 | 70–90 | 0.1 | None |
JT-2 | 50 | 300–330 | 55–80 | 0.1 | ||||
JT-3 | 3 | 290–300 | 85–90 | 0.1 | ||||
JS-1 | 11 | 040–060 | 25–30 45–60 70–75 | 0.6 | ||||
JS-2 | 10 | 060–080 | 60–65 80–85 | 0.55 | ||||
014 | Asu River Akpoha | Shale | JT-2 | 100 | 310–330 | 70–80 | 0.05 | None |
JS-1 | 13 | 40–50 | 30–35 55–60 | 2.0 | ||||
JS-4 | 29 | 280–300 | 40–45 55–60 | 1.6 | ||||
017 | Aboine River Isinkoro | Shale | JT-1 | 18 | 355–050 | 90 | 0.2 | None |
JT-2 | 51 | 310–340 | 70–75 | 0.2 | ||||
JT-3 | 1 | 290–300 | 75–80 | 0.5 | ||||
021 | Aba-Omega Ugep Road | Sandstone | JT-1 | 12 | 350–360 | 70–75 | 0.2 | None |
JT-2 | 9 | 320–330 | 80–85 | 0.2 | ||||
026 | Asu River | Shale | JT-2 | 28 | 330–340 | 70–80 | 0.2 | None |
JT-2 | 57 | 320–340 | 75–80 | 0.3 | ||||
JS-6 | 55 | 340–350 | 45–50 | 0.3 | ||||
JS-5 | 59 | 310–320 | 30–35 | 0.2 | ||||
JT-1 | 35 | 330–340 | 60–65 | 0.2 | ||||
027 | Afikpo Road | Sandstone | JS-3 | 5 | 020–030 | 40–45 | 1.0 | Ferruginized |
JC-1 | 8 | 280–290 | 55–60 | 1.0 |