Borehole Number: |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.42897 , 25.61894 |
Location: Letlhakane |
Location Description: LETLHAKANE |
Start Drill: 2004-11-29 |
End Drill: 2004-12-11 |
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: 89.5 M3/hr |
Static Water Level: 27.9 m |
Borehole Water Strike: 110 Metres |
End of Hole (Depth): 221 Metres |
Hole Diameter: 381 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 5 | Kalahari sands and calcrete overbuden, cream white |
2. | 5 | 16 | Calcrete with highly weathered basalt |
3. | 16 | 36 | Weathered basalt, purple |
4. | 36 | 108 | Basalt, moderately weathered to fresh, with presence of calcrete (stormberg) |
5. | 108 | 110 | Transition zone from basalt to Ntane sandstone |
6. | 110 | 113 | Sandstone, pinkish brown with occurence of reed silstone, fine grained |
7. | 113 | 131 | Sandstone, pinkish to light brown with occassional occurence of red siltstsone and sandstone fine to very fine grained |
8. | 131 | 142 | Sandstone, light brown to orange-brown, fine grained |
9. | 142 | 210 | Sandstone, colour changes from brown reddish-brown to light brown- and to orange-brown, fine to very fine grained |
10. | 210 | 221 | Sandstone, and siltstones of Mosolotsane formation, brick-red, very fine grained |
© Botswana Geoscience Institute 2025 | www.bgi.org.bw | Disclaimer