Table T5. Specifications of the logging tools used during Leg 184 grouped into tool strings.
| Tool strings | Typical
logging speed (m/hr) |
Individual tools | Properties measured | Sample
interval (cm) |
Approximate
vertical resolution (cm) |
Approximate
depth of investigation (cm) |
|---|---|---|---|---|---|---|
| Triple combination (total length = ~32 m) | 250-275 | HNGS | Natural gamma ray | 15 | 55 | Variable |
| APS | Porosity | 5 and 15 | 30 | 15 | ||
| HLDS | Bulk density, photoelectric effect | 15 | 38 | 15 | ||
| DITE-SFL | Resistivity | 15 | 200/150/90/60 | 150/76/38 | ||
| TAP | Temperature, acceleration, pressure | 1 per s, 4 per s, 1 per s | NA | NA | ||
| FMS-sonic (total length = ~30 m) | 500-550 | NGT | Natural gamma ray | 15 | 55 | 46 |
| DSI | Sonic velocity | 15 | 110 | 15-30 | ||
| GPIT | Tool orientation | 1 or 15 | NA | NA | ||
| FMS | Resistivity image | 0.25 | 0.5 | 15 | ||
| GHMT (total length = ~10 m) | 300-400 | NGT | Natural gamma ray | 15 | 55 | 25 |
| SUMS | Susceptibility | 5 and 15 | 35 | NA | ||
| NMRS | Total field | 15 | 45 | NA |
Notes: See Table T4, for explanations of acronyms used to describe tool strings and individual tool names. NA = not applicable.