Core,
section |
Sample details
|
ng PFT/
g sediment |
Potential µL
seawater/ g sediment |
Beads
counted |
Beads/g
|
---|---|---|---|---|---|
201-1230A- |
|
|
|
|
|
1H-1 | Center (slurry sect) | 0.01 | 0.01 | 0 in 50 fields | 0 |
1H-1 | Outside (slurry sect) | 0.48 | 0.48 |
|
|
1H-1 | Center | 0.03 | 0.03 |
|
|
1H-1 | Outside | 0.03 | 0.03 |
|
|
2H-2 | Center (slurry sect) | BD | BD | 0 in 50 fields | 0 |
2H-2 | Outside (slurry sect) | 0.12 | 0.12 |
|
|
9H-6 | Center | 0.01 | 0.01 |
|
|
9H-6 | Outside | BD | BD |
|
|
13H-3 | Center | 0.22 | 0.22 | 6 in 50 fields | 76 |
13H-3 | Outside | 1.42 | 1.42 | 73 in 50 fields | 1813 |
15H-6 | Center (slurry sect) | 0.02 | 0.02 | 0 in 50 fields | 0 |
15H-7 | Center | 0.01 | 0.01 | 0 in 50 fields | 0 |
15H-7 | Outside | 0.34 | 0.34 |
|
|
21H-3 | Center | 0.03 | 0.03 |
|
|
21H-3 | Outside | 0.84 | 0.84 |
|
|
22H-2 | Center | 0.13 | 0.13 |
|
|
22H-2 | Outside | 2.55 | 2.55 |
|
|
30X-1 | Center | 0.35 | 0.35 |
|
|
30X-1 | Outside | 1.68 | 1.68 |
|
|
37X-1 | Center | 0.21 | 0.21 |
|
|
37X-1 | Outside | 5.91 | 5.91 |
|
|
38X-1 | Center (dry portion) | 0.03 | 0.03 | 0 in 50 fields | 0 |
38X-1 | Outside (dry portion) | 1.33 | 1.33 |
|
|
38X-1 | Center (HTEW, wet) | 0.38 | 0.38 | 0 in 50 fields | 0 |
38X-1 | Outside (HTEW, wet) | 2.04 | 2.04 | 1 in 100 fields | (88.) |
201-1230B- |
|
|
|
|
|
12H-2 | Center, near hydrate | BD | BD |
|
|
12H-2 | Outside, near hydrate | 0.28 | 0.28 |
|
|
201-1230C- |
|
|
|
|
|
1H-1 | Center | 0.72 | 0.72 |
|
|
1H-1 | Outside | 2.31 | 2.31 |
|
|
2H-1 | Center | BD | BD |
|
|
2H-1 | Outside | 0.65 | 0.65 |
|
|
2H-3 | Center | BD | BD |
|
|
2H-3 | Outside | 0.12 | 0.12 |
|
|
2H-4 | Center | BD | BD |
|
|
2H-4 | Outside | 0.34 | 0.34 |
|
|
2H-5 | Center | 0.01 | 0.01 |
|
|
2H-5 | Outside | 0.22 | 0.22 |
|
|
Notes: Detection limit = 0.01 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 that the sediment be porous enough to allow all of the contaminating cells to travel with the PFT. In many cases, the level of contamination has been determined for both the outside of the core, where drill fluid is expected, and the middle of the core, where it may be clean. HTEW = thermophile enrichment whole-round core. Numbers in parentheses = not considered a significant indication of contamination (see text).