Table 7. Sample intervals, depths of investigation, and vertical resolutions of the logging tools deployed during Leg 175.
|
Tool string |
Tool |
Measurement |
Sample |
Depth of |
Approximate |
|---|---|---|---|---|---|
|
Seismostratigraphy |
NGT |
Natural gamma |
15 |
Variable |
45 |
|
|
SDT | Sonic velocity |
15 |
10-60 |
120 |
|
|
DIT | Resistivity |
2.5 or 15 |
38/76/150 |
59/150/200 |
| Lithodensity | HNGS | Natural gamma |
15 |
Variable |
45 |
|
|
APS | Porosity |
5 or 15 |
15 |
15-30 |
|
|
LDS | Bulk density, PEF |
2.5 or 15 |
15-60 |
15-45 |
| FMS | NGT | Natural gamma |
15 |
Variable |
45 |
|
|
FMS | Resistivity image |
0.25 |
5-25 |
<1 |
| GHMT | NRMT | Total magnetic field |
5 |
Variable |
15-30 |
|
|
SUMT | Magnetic susceptibility |
5 |
Variable |
15-30 |
Notes: The vertical resolution is the minimum depth interval for which a representative log measurement can be obtained. See text for explanations of the acronyms.