|
Hole
|
1270A
|
1270B
|
1270C
|
1270D
|
|---|---|---|---|---|
| Penetration depth (mbsf) | 26.9 | 45.9 | 18.6 | 57.3 |
| Recovery (%) | 12.0 | 37.4 | 10.6 | 13.4 |
| Length recovered (m) | 3.2 | 17.2 | 2.0 | 7.7 |
| Volume recovered (cm3) | 8,093 | 43,040 | 4,943 | 19,251 |
| Veins in hole (cm3/m) | 31.0 | 12.3 | 50.8 | 47.1 |
| Veins in hole (%) | 1.23 | 0.49 | 2.03 | 1.88 |
| Vein minerals in hole (cm3/m): |
|
|
|
|
| Serpentine | 24.2 | 2.1 | 43.8 | 39.3 |
| Talc | 5.88 | 6.38 | 0.56 | 2.53 |
| Chlorite | 0.02 | 2.51 | — | — |
| Amphibole | 0.02 | 1.28 | — | 0.09 |
| Secondary plagioclase |
|
0.01 | — | — |
| Magnetite | 0.87 | 0.00 | — | 0.10 |
| Iron oxides (other) | — | 0.02 | 6.35 | 4.57 |
| Sulfides | — | — | — | 0.23 |
| Carbonates |
|
0.01 | 0.08 | 2.03 |
| Vein minerals in hole (%): |
|
|
|
|
| Serpentine | 0.96 | 0.08 | 1.75 | 1.57 |
| Talc | 0.23 | 0.25 | 0.00 | 0.10 |
| Chlorite | 0.001 | 0.10 | — | — |
| Amphibole | 0.001 | 0.05 | — | 0.004 |
| Secondary plagioclase | — | 0.0003 | — | — |
| Magnetite | 0.03 | 0.0001 |
|
0.004 |
| Iron oxides (other) | — | — | 0.02 | 0.18 |
| Sulfides | — | — |
|
0.01 |
| Carbonates | — | — | 0.25 | 0.01 |
| Vein minerals in veins (%): |
|
|
|
|
| Serpentine | 78.07 | 17.02 | 86.31 | 83.48 |
| Talc | 18.98 | 51.90 | 1.10 | 5.37 |
| Chlorite | 0.08 | 20.42 | — |
|
| Amphibole | 0.08 | 10.40 | — | 0.19 |
| Secondary plagioclase |
|
0.00 | — |
|
| Magnetite | 2.80 | 0.00 |
|
0.22 |
| Iron oxides (other) |
|
|
12.51 | 9.70 |
| Sulfides |
|
0.00 |
|
0.49 |
| Carbonates |
|
|
0.08 | 0.56 |
Notes: The volume of veins is based on macroscopic observations of vein mineralogy and estimates of vein percentages by pieces. We computed volume percentage of veins by using the volume weighted average of the macroscopic estimates using the relative curated length and assuming a constant core radius throughout the site. This table is also available in ASCII.