Table T2. Operations and time estimates for Expedition 353 alternate sites.
| Site | Location | Seafloor depth (mbrf) |
Operations description | Drilling coring (days) |
LWD/MWD log (days) |
|
|---|---|---|---|---|---|---|
| AA-1 | 10°49.34′N | 1556 | Hole A - APC/XCB core to 544 mbsf | 3.3 | 0 | |
| EPSP to 544 mbsf | 93°6.73′E | Hole B - APC/XCB core to 544 mbsf | 2.8 | 0 | ||
| Hole C - APC/XCB core to 544 mbsf; wireline log-triple combo/FMS-sonic | 3.2 | 0.8 | ||||
| Subtotal days on site: | 10.1 | |||||
| AA-3 | 10°23.44′N | 2636 | Hole A - APC/XCB core to 471 mbsf | 3.4 | 0 | |
| EPSP to 471 mbsf | 93°16.69′E | Hole B - APC/XCB core to 471 mbsf; wireline log-triple combo/FMS-sonic | 3.3 | 0.8 | ||
| Subtotal days on site: | 7.5 | |||||
| AA-5 | 10°43.47′N | 1491 | Hole A - APC/XCB core to 603 mbsf | 3.7 | 0 | |
| EPSP to 603 mbsf | 93°5.33′E | Hole B - APC/XCB core to 603 mbsf; wireline log-triple combo/FMS-sonic | 3.6 | 0.9 | ||
| Subtotal days on site: | 8.1 | |||||
| BB-1B | 18°56.11′N | 1678 | Hole A - APC/XCB core to 222 mbsf | 1.4 | 0 | |
| EPSP to 222 mbsf | 85°41.98′E | Hole B - APC/XCB core to 222 mbsf | 1 | 0 | ||
| Hole C - APC/XCB core to 222 mbsf | 1.2 | 0 | ||||
| Subtotal days on site: | 3.6 | |||||
| BB-4 | 19°1.47′N | 1618 | Hole A - APC/XCB core to 172 mbsf | 1.4 | 0 | |
| EPSP to 172 mbsf | 85°42.88′E | Hole B - APC/XCB core to 172 mbsf | 0.7 | 0 | ||
| Hole C - APC/XCB core to 172 mbsf | 0.9 | 0 | ||||
| Subtotal days on site: | 3 | |||||
| BB-6 | 18°2.21′N | 2411 | Hole A - APC/XCB core to 624 mbsf | 4.4 | 0 | |
| EPSP to 624 mbsf | 85°9.74′E | Hole B - APC/XCB core to 624 mbsf; wireline log-triple combo/FMS-sonic | 4.3 | 0.9 | ||
| Subtotal days on site: | 9.6 | |||||
| BB-8B | 18°55.32′N | 1837 | Hole A - APC/XCB core to 206 mbsf | 1.4 | 0 | |
| EPSP to 206 mbsf | 85°45.87′E | Hole B - APC/XCB core to 206 mbsf | 0.9 | 0 | ||
| Hole C - APC/XCB core to 206 mbsf | 1.2 | 0 | ||||
| Subtotal days on site: | 3.4 |
LWD = logging while drilling, MWD = measurement while drilling. EPSP = Environmental Protection and Safety Panel. APC = advanced piston corer, XCB = extended core barrel, FMS = Formation MicroScanner.
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