Table 1.
Geographical, physical, and chemical characteristics of the boreholes.
| Sample code | Sample ID | Latitude | Longitude | Mine | District | Depth (mbls) | Residence time (kyr)a | δ18O(‰) | δ2H(‰) |
|---|---|---|---|---|---|---|---|---|---|
| BE2011 | BE326FW250111 Bh2 | S 28°14′24″ | E 26°47′45″ | Beatrix | Welkom | 1339 | >40–80 | −5.94 | −40.98 |
| BE2012 | BE326FW270712 Bh2 | S 28°14′24″ | E 26°47′45″ | Beatrix | Welkom | 1339 | >40–80 | −8.68 | −47.00 |
| DR5 | DR5IPCFW280711 | S 26°26′05″ | E 27°30′14″ | Driefontein | Carletonville | 1046 | 16–24 | −4.32 | −24.56 |
| FI88 | FI88FW031012 | S 28°22′42″ | E 23°26′45″ | Finsch | Finsch | 1056 | ~410 | −6.17 | −38.30 |
| MM5 | MM5.1940(46)FW200712 | S 27°58′52″ | E 26°52′30″ | Masimong | Welkom | 1900 | >BE | −7.00 | −40.00 |
| TT107 | TT107FW240811 | S 26°25′05″ | E 27°25′38″ | Tau Tona | Carletonville | 3048 | 1–6 | −5.11 | −22.40 |
| TT109 | TT109FW060312 Bh2 | S 26°25′05″ | E 27°25′38″ | Tau Tona | Carletonville | 3136 | 16–21 | −5.02 | −25.29 |