Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL78/88 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -22.969339 , 21.514262 |
Location: Ghanzi |
Start Drill: N/A |
End Drill: N/A |
Borehole Type: Exploration |
Drilling Method: Core |
Sample Type: Core |
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): N/A |
Hole Diameter: N/A |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 18 | Upper Kalahari: Loose Kalahari Sands. |
2. | 18 | 32 | Upper Kalahari: Semiconsolidated Sands and Silcrete. |
3. | 32 | 155 | Lower Kalahari: Thick homogenous sequence of medium grained calcareous Sandstone - frequent colour variations - but dominantly light grey/tan/light pink. |
4. | 155 | 171 | Karoo: Mixed horizons of silty mudstone, fine Sandstone and coarse Sandstone (fining upwards). |
5. | 171 | 216 | Karoo: Dark grey/green/black coarse grained dolerite.Top 5m highly wthrd - 215m-chilled hornfelsic margin in dolerite. |
6. | 216 | 229 | Karoo: White clean medium grained Sandstone grain supported. (Aquifer major fresh water strike) Much milky quartz gravel and pebbles. |
7. | 229 | 244 | Karoo: Light to medium grey Sandy siltstone. |
8. | 244 | 260 | Karoo: White to light grey fine to medium Sandstone (Aquifer-second water strike). |
9. | 260 | 268 | Karoo: Dark grey muddy siltstone with minor mudstone. |
10. | 268 | 290 | Karoo: Coal measures-dark grey black mudstone, fine grained massive Sandstone, siltstones, occasional vitreous black Coal horizons (mica seen throughout). |
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