Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL001/97 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.48646 , 25.850732 |
Location: Orapa |
Start Drill: 1900-01-02 |
End Drill: N/A |
Borehole Type: Exploration |
Drilling Method: Percussion & Core |
Sample Type: Core & Chips |
Depth of Surface Casing: N/A |
Azimuth: Degrees |
Hole Inclination: N/A |
Collar Elevation: N/A |
Borehole Water Strike: N/A |
End of Hole (Depth): 80 Metres |
Hole Diameter: N/A |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 2 | Mainly cream-white calcretised Kalahari sandstone, matrix supported, immature. |
2. | 2 | 15 | Purplish-grey, silcretised, calcretised sandstone. |
3. | 15 | 18 | Calcrete sandstone. |
4. | 18 | 26 | Reddish-orange siltstone horizone with calcretised and silcretised sandstone. |
5. | 26 | 31 | Pinkish Kalahari sandstone, immature, matrix supported, aeolian texture. |
6. | 31 | 42 | Immature, matrix supported, aeolian sandstone, some silcretised and calcretised horizons. |
7. | 42 | 46 | Highly weathered, purplish, amygdaloidal basalt with yellowish-green alteration,down hole sandstone contamination. |
8. | 46 | 48 | Fresh microcrystalline basalt, yellowish alteration still persists. |
9. | 48 | 56 | Much finer-grained amygdaloidal basalt. |
10. | 56 | 67 | Dull purplish-grey or yellowish, weathered, amygdaloidal basalt. |
11. | 67 | 75 | Fine-grained amygdaloidal basalt. |
12. | 75 | 80 | Fresh microcrystalline basalt. E.O.H |
© Botswana Geoscience Institute 2024 | www.bgi.org.bw | Disclaimer