Table T3.
Specifications of the downhole tools deployed during Leg 179.
Tool string |
Tool |
Measurement |
Sample
interval (cm) |
Approximate vertical resolution (cm) |
Resistivity/Sonic
|
SDT
|
Sonic velocity
|
15
|
120
|
|
DIT*
|
Resistivity
|
2.5 and 15
|
200/150/75
|
|
NGT*
|
Natural gamma
|
15
|
45
|
|
TLT
|
Borehole fluid
temperature
|
1/s
|
--
|
|
|
|
|
|
FMS-sonic
(total length ~12 m)
|
NGT*
|
Natural gamma
|
15
|
45
|
|
GPIT*
|
Tool
orientation
|
15
|
--
|
|
FMS*
|
Resistivity
image
|
0.25
|
0.5
|
|
|
|
|
|
Porosity/Density
(total length ~19.5 m)
|
HNGS*
|
Natural gamma
|
15
|
45
|
|
APS*
|
Porosity
|
5 and 15
|
30
|
|
HLDS*
|
Bulk density,
PEF
|
2.5 and 15
|
15/45
|
|
|
|
|
|
BHC (total
length ~14 m)
|
NGT*
|
Natural gamma
|
15
|
45
|
|
BHC*
|
Borehole
compensated sonic
|
15
|
61
|
Notes: * = trademarks of
Schlumberger. See Table T2 for explanations of
the acronyms.