|
Core, section
|
Sample type
|
ng PFT/
g sediment |
Potential µL seawater/
g sediment |
Beads
counted |
Beads/
g sediment |
|---|---|---|---|---|---|
| 201-1226B- |
|
|
|
|
|
| 1H-4 |
|
0.03 | 0.03 |
|
|
| 2H-4 |
|
BD | BD |
|
|
| 3H-4 |
|
0.03 | 0.03 |
|
|
| 4H-3 |
|
0.08 | 0.08 |
|
|
| 6H-3 |
|
0.09 | 0.09 |
|
|
| 8H-3 |
|
0.06 | 0.06 |
|
|
| 10H-3 |
|
0.03 | 0.03 |
|
|
| 12H-3 |
|
0.04 | 0.04 | 2 in 50 fields | 84 |
| 15H-4 |
|
BD | BD |
|
|
| 18H-4 |
|
BD | BD |
|
|
| 21H-4 |
|
0.03 | 0.03 |
|
|
| 22H-4 |
|
0.04 | 0.04 | 1 in 50 fields | (29) |
| 24H-3 |
|
BD | BD |
|
|
| 27H-3 |
|
BD | BD |
|
|
| 30X-4 |
|
4.08 | 4.08 |
|
|
| 40X-1 |
|
0.99 | 0.99 |
|
|
| 43X-4 |
|
0.03 | 0.03 |
|
|
| 43X-2 | 4-cm biscuit | 0.23 | 0.23 |
|
|
| 43X-2 | Slurry biscuit 1 | 0.67 | 0.67 |
|
|
| 43X-2 | Slurry biscuit 2 | 0.18 | 0.18 | 0 | 0 |
| 45X-3 |
|
0.07 | 0.07 |
|
|
| 46X-3 | Biscuit for SRR | 0.04 | 0.04 |
|
|
| 46X-4 |
|
0.14 | 0.14 |
|
|
| 47X-2 | Biscuit (black sediment) | 0.15 | 0.15 | 35 in 50 fields | 7295 |
| 47X-2 | Biscuit (red sediment) | 0.17 | 0.17 | 4 in 50 fields | 750 |
| 47X-CC | Crushed rock | 0.05 | 0.05 |
|
|
| 47X-CC | Breccia | 1.78 | 1.78 |
|
|
| 47X-2 |
|
0.67 | 0.67 |
|
|
| 47X-3 |
|
0.29 | 0.29 |
|
|
| 201-1226E- |
|
|
|
|
|
| 1H-1 |
|
BD | BD |
|
|
| 1H-3 |
|
BD | BD |
|
|
| 1H-5 |
|
BD | BD |
|
|
| 13H-3 |
|
0.03 | 0.03 |
|
|
| 15H-3 |
|
0.03 | 0.03 |
|
|
| 15H-4 |
|
BD | BD |
|
|
| 15H-4 | Replicate | BD | BD |
|
|
| 16H-4 |
|
0.08 | 0.08 |
|
|
| 16H-4 | Replicate | 0.16 | 0.16 |
|
|
| 16H-4 | Replicate | 0.16 | 0.16 |
|
|
| 17H-4 |
|
0.02 | 0.02 |
|
|
| 18H-4 |
|
0.04 | 0.04 |
|
|
| 19H-4 |
|
0.45 | 0.45 |
|
|
| 20H-4 |
|
BD | BD |
|
|
Notes: Detection limit = 0.02 µL seawater/g sediment, BD = below detection. The potential for microbial contamination is based on 5 x 108 cells/L surface seawater. This may be viewed as an upper limit for microbial contamination because it requires the sediment to be permeable enough to allow all of the contaminating cells to travel with the PFT. SRR = sulfate reduction rate measurement. The number in parentheses represents results based on a single, non-reproducible bead observation.