Borehole Number: |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.32498 , 25.18911 |
Location: Mokoboxana-Ngamiland |
Location Description: MOKOBOXANE |
Start Drill: 2004-12-02 |
End Drill: 2004-12-07 |
Borehole Type: Groundwater |
Drilling Method: Percussion |
Drilling Rig(s): N/A |
Sample Type: Water |
Depth of Surface Casing: N/A |
Hole Inclination: N/A |
Estimated Yield: 1 M3/hr |
Static Water Level: 48.5 m |
Borehole Water Strike: 129 Metres |
End of Hole (Depth): 171 Metres |
Hole Diameter: 254 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 2 | Calcrete and fine brown sand with reddish silcrete |
2. | 2 | 12 | Silcrete: calcretised pink to cream white clay |
3. | 12 | 13 | Clay:purple |
4. | 13 | 41 | Sandstone: fine grained grey and weakly lithified |
5. | 41 | 49 | Mudstone: grey to green thin layers alternating with brick red layers of mudstone |
6. | 49 | 54 | Siltone: fine friable and grey in colour |
7. | 54 | 75 | Mudstone: grey to light grey |
8. | 75 | 120 | Sandstone/mudstone layers alternating |
9. | 120 | 139 | Sandstone/mudstone layers sandstone strongly lithified |
10. | 139 | 147 | Sandstone fine to coarse, grey to brown and rich in silica |
11. | 147 | 171 | Mudstone;green to red then grey towards the end |
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