Borehole Number: |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.40944 , 25.64847 |
Location: Letlhakane |
Location Description: LETLHAKANE |
Start Drill: 2004-12-12 |
End Drill: 2004-12-20 |
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: 9.06 M3/hr |
Static Water Level: 22.6 m |
Borehole Water Strike: 140 Metres |
End of Hole (Depth): 205 Metres |
Hole Diameter: 381 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 23 | overburden to kalahari sands (0-1m), calcrete (1-7m) and pinkish-red clays (7-19m) |
2. | 23 | 27 | basalt, highly weathered, brownish |
3. | 27 | 47 | basalt, moderately weathered, purple |
4. | 47 | 72 | basalt, purple to grey |
5. | 72 | 138 | basalt, moderately weathered , purple with calcite |
6. | 97 | 138 | basalt, fresh , grey |
7. | 138 | 140 | transition zone from basalt to sandstone |
8. | 140 | 145 | sandstone, light brown, fine grained |
9. | 145 | 147 | sandstone, mixed with basalt |
10. | 147 | 156 | sandstone, light to deep brown, fine grained |
11. | 156 | 158 | sandstone mixed with basalt |
12. | 158 | 194 | sandstone, brown to orange , fine grained with basalt occuring between 175-178m |
13. | 200 | 205 | mudstone, brick red, very fine grained and sticky with basalt re-occuring at 204-205m |
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