Table 1.
| Expedition | Site | Hole | Core sample | Section | Top (cm) | Botom (cm) | Depth (mbsf) | Rock type | Temperature (°C) | Alteration (%) | Bacterial 16S rDNA |
| 304 | 1309 | A | 1(1) | 2 | 45 | 58 | 0.45 | Carbonate sediment | na | na | na |
| 304 | 1309 | D | na | na | na | na | ∼5(2) | Water sample(3) | na | na | Y |
| 304 | 1309 | D | 10 | 1 | 103 | 111 | 61.23 | Serpentinized peridotite | 14 | 75 | Y |
| 304 | 1309 | D | 12 | 2 | 42 | 50 | 71.69 | Gabbro | 14 | 45 | Y |
| 304 | 1309 | D | 37 | 2 | 93 | 101 | 202.83 | Gabbro | 17 | 30 | Y |
| 304 | 1309 | D | 53 | 1 | 100 | 111 | 277.4 | Gabbro | 21 | 40 | Y |
| 304 | 1309 | D | 58 | 1 | 67 | 73 | 301.07 | Serpentinized peridotite | 22 | 20 | Y |
| 304 | 1309 | D | 68 | 1 | 88 | 92 | 349.28 | Gabbro | 23 | 30 | Y |
| 304 | 1309 | D | 78 | 1 | 82 | 90 | 397.32 | Gabbro | 25 | 30 | Y |
| 305 | 1309 | D | na | na | na | na | ∼397 | Water sample | na | na | Y |
| 305 | 1309 | D | 80(4) | 1 | 18 | 28 | 401.48 | Olivine gabbro | 26 | 10 | Y |
| 305 | 1309 | D | 82 | 1 | 27 | 39 | 410.47 | Olivine-bearing Gabbro | 26 | 10 | NA |
| 305 | 1309 | D | 90(5) | 1 | 30 | 36 | 448.9 | Olivine Gabbro | 27 | 50 | Y |
| 305 | 1309 | D | 100 | 1 | 80 | 89 | 497.4 | Olivine-rich Troctolite | 29 | 10 | N |
| 305 | 1309 | D | 102 | 2 | 67 | 78 | 508.31 | Troctolite | 29 | 10 | N |
| 305 | 1309 | D | 122 | 2 | 76 | 89 | 604.24 | Olivine-bearing Gabbro | 33 | 30 | Y |
| 305 | 1309 | D | 133 | 3 | 122 | 132 | 658.73 | Gabbro | 36 | 30 | Y |
| 305 | 1309 | D | 142(5) | 3 | 0 | 13 | 701.05 | Gabbro | 38 | 30 | Y |
| 305 | 1309 | D | 164 | 1 | 60 | 74 | 799.6 | Gabbro | 43 | 30 | Y |
| 305 | 1309 | D | 184 | 1 | 78 | 85 | 895.78 | Olivine Gabbro | 48 | 5 | Y |
| 305 | 1309 | D | 208 | 4 | 0 | 12 | 1004.79 | Gabbro | 54 | 1 | N |
| 305 | 1309 | D | 235 | 2 | 52 | 63 | 1131.28 | Olivine-rich Troctolite | 63 | 10 | N |
| 305 | 1309 | D | 250 | 1 | 0 | 11 | 1201.5 | Olivine Gabbro | 68 | 5 | Y |
| 305 | 1309 | D | na | na | na | na | ∼1215 | Water sample | na | na | Y |
| 305 | 1309 | D | 273 | 1 | 116 | 132 | 1313.06 | Gabbro | 79 | 20 | Y |
| 305 | 1309 | D | 290 | 3 | 136 | 145 | 1391.01 | Olivine-bearing Gabbro | 102 | 5 | N |
1
Carbonate sediment was collected solely for cell counts and was not examined any further.
2
Units are meters above seafloor.
3
Water samples were collected using a sterile water sampling temperature probe and served as experimental controls to determine the extent of drilling induced contamination.
4
Sample 82 was insufficient for crushing and powdering and was not analyzed further.
5
Samples assayed for functional genes by microarray.