Table 2. Characteristics of sampled wells used for sediment sampling and sample elevations and redox conditions.
| Well | Elev. (m) | Facies | Microb. | XRD | Tomo. | Mass (kg) | |
|---|---|---|---|---|---|---|---|
| C7870 | |||||||
| SE: | 115.2 | 98.1 | O | X | X | X | 1 |
| HRE: | 98.4 | 97.7 | O | X | X | X | 4 |
| TE: | 97.4 | 97.4 | T | X | X | X | 4 |
| 96.9 | R | X | X | X | 1 | ||
| 96.6 | R | X | X | X | 4 | ||
| C7869 | |||||||
| SE: | 114.7 | 101.6 | O | 0.1 | |||
| HRE: | 101.9 | 100.7 | T | X | X | 3 | |
| TE: | 100.7 | 100.1 | R | X | X | 5 | |
| 98.8 | R | X | X | 0.6 | |||
| C7868 | |||||||
| SE: | 114.8 | 97.7 | O | X | X | 0.7 | |
| HRE: | 97.7 | 97.4 | T | X | X | 0.6 | |
| TE: | 97.4 | 96.8 | R | X | X | 0.8 | |
| C7867 | |||||||
| SE: | 115.2 | 97.2 | O | X | X | X | 1.3 |
| HRE: | 97.2 | 96.0 | O | X | X | X | 1.4 |
| TE: | 94.8 | 95.4 | O | X | X | X | 1.4 |
| 94.8 | T | X | X | X | 1.5 | ||
| 94.2 | R | X | X | 1.8 | |||
| 93.6 | R | X | X | X | 1.3 | ||
Not all samples are associated with all data types; organic
carbon, pH, and Fe(II) were sampled at all locations; an ‘X’ in the Microb., XRD, and Tomo.
columns indicate, respectively, that estimates exist for microbial community composition
and biomass, mineralogy, and tomographic structure. SE = well surface elevation, HRE =
elevation within the well of the Hanford-Ringold interface, TE = elevation within the well of
the transition biogeochemical facies, O = oxidized facies, R = reduced facies, I = transition facies.
Approximate wet masses of collected sediments at each depth are also provided.