Table 1.
Numbers of cells that might be supported by radiolytic H2 production in SPG basalt.
| Least radioactive SPG basalt sample | Most radioactive SPG basalt sample | |||
|---|---|---|---|---|
| Fracture Width (μm) | e- flux per area of fracture surface (mol e-/cm2/yr) | Number of cells that might be supported by this flux | e- flux per area of fracture surface (mol e-/cm2/yr) | Number of cells that might be supported by this flux |
| 100 | 7.65E-19 | 1.1E-04 ± 2E-05 to1.8E-02 ± 1E-02 | 6.25E-17 | 9.2E-03 ± 2E-03 to1.5E+00 ± 9E-01 |
| 101 | 6.50E-18 | 9.6E-04 ± 2E-04 to1.6E-01 ± 1E-01 | 4.72E-16 | 7.0E-02 ± 1E-02 to1.1E+01 ± 7E+00 |
| 102 | 3.82E-17 | 5.6E-03 ± 1E-03 to9.2E-01 ± 6E-01 | 1.86E-15 | 2.8E-01 ± 5E-02 to4.5E+01 ± 3E+01 |
| 103 | 1.08E-16 | 1.6E-02 ± 3E-03 to2.6E+00 ± 2E+00 | 6.80E-15 | 1.0E+00 ± 2E-01 to1.6E+02 ± 1E+02 |
| 104 | 3.53E-16 | 5.2E-02 ± 1E-02 to8.5E+00 ± 5E+00 | 1.99E-14 | 2.9E+00 ± 5E-01 to4.8E+02 ± 3E+02 |
| 105 | 9.90E-16 | 1.5E-01 ± 3E-02 to2.4E+01 ± 1E+01 | 5.45E-14 | 8.1E+00 ± 1E+00 to1.3E+03 ± 8E+02 |
| 106 | 1.16E-15 | 1.7E-01 ± 3E-02 to2.8E+01 ± 2E+01 | 6.35E-14 | 9.4E+00 ± 2E+00 to1.5E+03 ± 1E+03 |
Electron fluxes are calculated from radiolytic H2 production rates for 1 sq. cm of basalt for the least radioactive and most radioactive SPG basalt samples. The ranges of cell numbers that might be supported are calculated from minimum and maximum O2 consumption rates that are distinguishable from zero within subseafloor SPG sediment (D’Hondt et al., 2015).