Table 2.
Geochemical and microbial profiling of Atlantis II and Discovery brine and overlying deep seawater
| Sample ID | Depth (m) | Concn of: |
Microbial cell density (104/ml) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fe (mg/liter) | Mn (mg/liter) | Cu (μg/liter) | Si (mg/liter) | SO4−2 (mg/liter) | PO4−3 (mg/liter) | NO3− (mg/liter) | NO2− (μM) | NH4+ (mg/liter) | TOC (mg/liter) | TIC (mg/liter) | |||
| DIS-NDW | 1,800 | <0.1 | <0.1 | 7.73 ± 0.15 | 1.03 ± 0.15 | 2,700 ± 100 | 2.32 ± 0.13 | 1.00 ± 0.10 | 0.055 | 0.003 | 1.32 ± 0.73 | 28.6 ± 0.14 | 4.5 ± 1.91 |
| DIS-BWI | 2,028 | <0.1 | 9.53 ± 0.83 | <0.1 | 10.13 ± 0.15 | 2,400 ± 264 | <0.1 | 1.40 ± 0.30 | 0.37 | 1.13 | 3.32 ± 0.47 | 18.7 ± 0.02 | 54.4 ± 15.45 |
| DIS-LCL | 2,114 | 0.72 ± 0.13 | 4.93 ± 2.37 | 2.20 ± 0.20 | 7.83 ± 1.44 | 667 ± 58 | 1.29 ± 0.07 | 2.80 ± 0.10 | 0.94 | 10.91 | 2.10 ± 0.39 | 3.0 ± 0.02 | 1.9 ± 1.18 |
| ATL-NDW | 1,800 | <0.1 | <0.1 | 5.03 ± 0.15 | 0.77 ± 0.06 | 2,866 ± 57 | 0.18 ± 0.02 | 7.47 ± 0.31 | 0.009 | 0.009 | 3.31 ± 0.22 | 29.8 ± 0.04 | 5.0 ± 1.00 |
| ATL-BWI | 1,998 | <0.1 | <0.1 | 1.43 ± 0.66 | 3.07 ± 0.06 | 2,933 ± 602 | <0.1 | 1.13 ± 0.59 | 0.01 | 0.01 | 5.51 ± 0.38 | 26.4 ± 0.13 | 18.2 ± 2.23 |
| ATL-UCL1 | 2,022 | <0.1 | 49.00 ± 2.00 | 2.4 ± 0.44 | 20.50 ± 1.75 | 1,900 ± 173 | 0.28 ± 0.07 | 3.27 ± 2.47 | 0.1 | 0.38 | 4.36 ± 0.25 | 25.3 ± 1.38 | 28.3 ± 10.41 |
| ATL-UCL2 | 2,049 | 0.23 ± 0.02 | 94.67 ± 5.13 | 3.20 ± 2.77 | 25.77 ± 1.58 | 1,733 ± 58 | 0.61 ± 0.28 | 1.20 ± 0.36 | 0.39 | 1.95 | 1.87 ± 0.01 | 22.5 ± 0.01 | 3.33 ± 2.08 |
| ATL-LCL | 2,139 | 83.00 ± 10.44 | 141.00 ± 39.00 | 18.37 ± 4.50 | 69.33 ± 4.05 | 467 ± 57 | 1.11 ± 0.29 | 4.80 ± 0.17 | 2.38 | 10.62 | NDa | 15.3 ± 0.87 | 0.83 ± 0.29 |
a
Not detected.