Table T2. Expedition 352 alternate sites and operations plan.
|
Site
|
Location (latitude, longitude)
|
Seafloor depth (mbrf)
|
Operations description
|
|
Drilling, coring (days)
|
Logging (days)
|
|---|---|---|---|---|---|---|
|
BON-3A Total depth pending EPSP approval |
28°26.03′N, 142°46.02′E | 4773 | Hole A - Jet-in test | 0.8 | ||
| Hole B - APC/XCB to basement at ~210 mbsf | 2.1 | |||||
| Hole C - Reentry system - 16” and 10-3/4” casing to basement at 210 mbsf | 5.3 | |||||
| Hole C - RCB core from 220 to 960 mbsf; log with triple combo and FMS-sonic | 15.1 | 1.4 | ||||
| Subtotal days on site: | 24.7 | |||||
|
BON-4A Total depth pending EPSP approval |
28°25.46′N, 142°36.12′E | 3141 | Hole A - Jet-in test | 0.7 | ||
| Hole B - APC/XCB to basement at ~100 mbsf | 0.9 | |||||
| Hole C - Reentry system - 16” and 10-3/4” casing to basement at 100 mbsf | 4.3 | |||||
| Hole C - RCB core from 110 to 850 mbsf; log with triple combo and FMS-sonic | 12.4 | 1.3 | ||||
| Subtotal days on site: | 19.6 | |||||
|
BON-5A Total depth pending EPSP approval |
28°24.54′N, 142°37.04′E | 3163 | Hole A - Jet-in test | 0.7 | ||
| Hole B - APC/XCB to basement at ~160 mbsf | 1.4 | |||||
| Hole C - Reentry system - 16” and 10-3/4” casing to basement at 160 mbsf | 4.4 | |||||
| Hole C - RCB core from 170 to 910 mbsf; log with triple combo and FMS-sonic | 12.6 | 1.3 | ||||
| Subtotal days on site: | 20.4 | |||||
|
BON-6A Total depth pending EPSP approval |
28°25.63′N, 142°43.50′E | 4463 | Hole A - Jet-in test | 0.8 | ||
| Hole B - APC/XCB to basement at ~270 mbsf | 2.5 | |||||
| Hole C - Reentry system - 16” and 10-3/4” casing to basement at 270 mbsf | 5.3 | |||||
| Hole C - RCB core from 280 to 1020 mbsf; log with triple combo and FMS-sonic | 14.6 | 1.4 | ||||
| Subtotal days on site: | 24.6 | |||||
|
DSDP Site 459 Total depth pending EPSP approval |
17°51.75′N, 147°18.09′E | 4141 | Hole A - Jet-in test | 1.1 | ||
| Hole B - Reentry system - 16” and 10-3/4” casing to basement at 500 mbsf | 6.1 | |||||
| Hole B - Drill ahead to 650 mbsf and RCB core to 1500 mbsf; log with | 19.8 | 1.7 | ||||
| triple combo and FMS-sonic | ||||||
| Subtotal days on site: | 28.7 |
All sites pending Environmental Protection and Safety Panel (EPSP) approval. APC = advanced piston corer, XCB = extended core barrel, RCB = rotary core barrel, triple combo = triple combination, FMS = Formation MicroScanner.
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