Table 1. Temperature, salinity, oxygen, sulfide, temperature and salinity data for Hamelin Pool, Australia, and Highborne Cay, Bahamas, microbialite samples.
| Temperature (°C) | Salinity (PSU) | Max. % O2 saturation (depth in mm) | Sulfide (μM) (depth first observed in mm) | |
|---|---|---|---|---|
| Highborne Cay | ||||
| Type 1 mat 0–1 cm | 25.4–25.9 | 33–35.5 | 225–264 (2.2–2.4) | NA |
| Type 1 mat 1–2 cm | 25.4–25.9 | 33–35.5 | 0 (0) | 24 (12.25) |
| Type 2 mat 0–1 cm | 25.4–25.9 | 33–35.5 | 394–456 (5.8–6.4) | 76 (7.25) |
| Type 2 mat 1–2 cm | 25.4–25.9 | 33–35.5 | 0 (0) | 282 (throughout) |
| Incipient Type II mat 0–1 cm | 25.4–25.9 | 33–35.5 | 285–346 (7.4–8.2) | 17 (9.25) |
| Incipient Type II mat 1–2 cm | 25.4–25.9 | 33–35.5 | 0 (0) | 192 (throughout) |
| Thrombolite 0–1 cm | 25.4–25.9 | 33–35.5 | 536–622 (8.2–9.6) | 10 (9.75) |
| Thrombolite 1–2 cm | 25.4–25.9 | 33–35.5 | 0 (0) | 168 (throughout) |
| Highborne water | 25.4–25.9 | 33–35.5 | 100 | NA |
| Hamelin Pool | ||||
| Pustular mat 0–1 cm | 14–15 | 66–72 | 174–218 (5.8–6.4) | 38 (6.25) |
| Pustular mat 1–2 cm | 14–15 | 66–72 | 0 (0) | 81 (throughout) |
| Colloform mat 0–1 cm | 14–15 | 66–72 | 188–230 (5.8–6.2) | 19 (7.75) |
| Colloform mat 1–2 cm | 14–15 | 66–72 | 0 (0) | 189 (throughout) |
| Smooth mat 0–1 cm | 14–15 | 66–72 | 229–312 (7.4–8.2) | 26 (7.5) |
| Smooth mat 1–2 cm | 14–15 | 66–72 | 0 (0) | 170 (throughout) |
| Smooth Scoured mat 0–1 cm | 14–15 | 66–72 | 100–108 (2.6–3.4) | 32 (4.0) |
| Smooth Scoured mat 1–2 cm | 14–15 | 66–72 | 0 (0) | 76 (throughout) |
| Hamelin Pool water | 14–15 | 66–72 | 100 | NA |
| Blue Hole sulfidic water | 18 | 78 | 0 | NA |
Abbreviation: NA, not available.
For sulfide data, depth noted is where free sulfide (H2S/HS−/S2−) is first observed, and the maximum concentration during the day during sampling is based on single profiles (note: replicate profiles are very similar). Oxygen data are presented as the ranges of maximum depth and maximum % oxygen saturation in each sample.