Table T1. Depths and geometrical parameters for holes, casing, and subseafloor borehole observatories (CORKs) associated with Expedition 327 and related experiments. (See table notes.)
|
Component
|
Depth
|
Hole
1026B |
Hole 1027C
|
Hole U1301A
|
Hole
U1301B |
Hole
U1362A |
Hole U1362B
|
|---|---|---|---|---|---|---|---|
| Seafloor | mbrf | 2669.1 | 2667.3 | 2667.3 | 2667.8 | 2672.0 | 2672.0 |
| Basement | mbsf | 247.1 | 613.7* | 262.2 | 265.2 | 236.0 | 242.0 |
| Total depth of hole* | mbsf | 295.2 | 632.7 | 369.7 | 582.8 | 528.0 | 359.0 |
| msb | 48.1 | 19.0 | 107.5 | 317.6 | 292.0 | 117.0 | |
| 20 or 21-1/2 inch hole | mbsf | NA† | NA† | 270.2 | 268.2 | 236.0 | 243.5 |
| msb | NA | NA | 8.0 | 3.0 | 0.0 | 1.5 | |
| 18-1/2 inch hole | mbsf | NA† | NA† | 271.9 | 276.2 | 242.0 | 250.0 |
| msb | NA | NA | 9.7 | 11.0 | 6.0 | 8.0 | |
| 14-3/4 inch hole | mbsf | 350.2 | 584.8 | 369.7 | 350.2 | 346.0 | 282.0 |
| msb | 103.1 | –28.9 | 107.5 | 85.0 | 110.0 | 40.0 | |
| 9-7/8 inch hole | mbsf | 295.2 | 632.7 | NA | 582.8 | 528.0 | 359.0 |
| msb | 48.1 | 19.0 | NA | 317.6 | 292.0 | 117.0 | |
| 20 inch casing shoe | mbsf | NA† | NA† | 42.9 | 42.5 | 53.0 | 53.0 |
| 16 inch casing shoe | mbsf | 39.7 | 37.6 | 265.3 | 270.9 | 230.0 | 242.0 |
| 10-3/4 inch casing shoe | mbsf | 248.5 | 578.7 | 277.1 | 346.1 | 308.5 | 272.0 |
| msb | 1.4 | –35.0 | 14.9 | 80.9 | 72.5 | 30.0 | |
| Base of CORK system | mbsf | 201.6 | NA | 291.9 | 291.9 | 469.7 | 311.0 |
| msb | –45.5 | NA | 29.7 | 26.8 | 233.7 | 69.0 | |
| Packer depth(s) | mbsf | 198.1 | NA | 270.3 | 428.8, 472.2 | 307.3, 429.2 | 271.1 |
| msb | –49.0 | NA | 8.1 | 163.6, 207.0 | 71.3, 193.2 | 29.1 |
Notes: mbrf = meters below rig floor, mbsf = meters below seafloor, msb = meters subbasement (msb values <0 indicate location within the sedimentary section). * = basement depth in Hole 1027C refers to uppermost ocean crust below a sill and intercalated sediments. † = conductor casing jetted in for Holes 1026B and 1027C had 16 inch outer diameter and no larger hole was drilled. Packer depths reported are for base of deepest packer element in each set deployed. NA = not applicable.
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