Table T4. Coring summary, Hole C0001H. (See table notes.)
| Hole C0001H |
| Latitude: 33°14.3233′N |
| Longitude: 136°42.6840′E |
| Time on hole (h): 229 (0000 h, 26 Nov 2007–1300 h, 5 Dec 2007) |
| Seafloor (drillers measurement from rig floor, m): 2225.5 |
| Distance between rig floor and sea level (m): 28.5 |
| Water depth (drillers measurement from sea level, m): 2197 |
| Total depth (drillers depth below rig floor, m): 2816 |
| Total penetration (core depth below seafloor, m): 590.5 |
| Total length of cored section (m): 228.6 |
| Total core recovered (m): 126.3 |
| Core recovery (%): 55.2 |
| Total number of cores: 26 |
| Core | Date (Nov 2007) |
Local time (h) | CSF (m) | Length (m) | Recovery (%) | Comments | ||
|---|---|---|---|---|---|---|---|---|
| Top | Bottom | Cored | Recovered | |||||
| 315-C0001H- | ||||||||
| 1R | 26 | 1704 | 230.0 | 239.5 | 9.5 | 3.9 | 41.4 | |
| 2R | 26 | 1829 | 239.5 | 249.0 | 9.5 | 6.8 | 71.2 | |
| 3R | 26 | 2008 | 249.0 | 258.5 | 9.5 | 5.4 | 56.3 | |
| 4R | 26 | 2213 | 258.5 | 268.0 | 9.5 | 6.7 | 70.7 | |
| 5R | 26 | 2332 | 268.0 | 277.5 | 9.5 | 4.0 | 41.6 | Changed core catcher type from flapper + finger to finger + slip |
| 6R | 27 | 0137 | 277.5 | 287.0 | 9.5 | 2.4 | 25.5 | |
| 7R | 27 | 0355 | 287.0 | 296.5 | 9.5 | 8.7 | 92.0 | Change pump rate; higher WOB and ROP |
| 8R | 27 | 1020 | 296.5 | 302.5 | 6.0 | 9.0 | 149.2 | 6 m core for connection; soft, sticky, washed |
| 9R | 27 | 1150 | 302.5 | 312.0 | 9.5 | 1.8 | 18.4 | |
| 10R | 27 | 1301 | 312.0 | 321.5 | 9.5 | 7.5 | 79.3 | |
| 11R | 27 | 1513 | 321.5 | 331.0 | 9.5 | 7.7 | 81.1 | |
| 12R | 27 | 1616 | 331.0 | 340.5 | 9.5 | 7.4 | 77.6 | |
| 13R | 27 | 1734 | 340.5 | 350.0 | 9.5 | 8.5 | 89.1 | |
| 14R | 27 | 1853 | 350.0 | 359.5 | 9.5 | 6.9 | 72.4 | |
| 15R | 27 | 2002 | 359.5 | 369.0 | 9.5 | 5.2 | 54.4 | Circulation mud in top of liner |
| 16R | 27 | 2107 | 369.0 | 378.5 | 9.5 | 5.8 | 61.4 | |
| 17R | 27 | 2255 | 378.5 | 388.0 | 9.5 | 2.3 | 24.3 | |
| 18R | 28 | 0023 | 388.0 | 397.5 | 9.5 | 3.7 | 38.5 | Decrease pump rate; caving gravels at the top interval (15 cm) |
| 19R | 28 | 0204 | 397.5 | 407.0 | 9.5 | 3.3 | 35.1 | |
| 20R | 28 | 0537 | 407.0 | 412.5 | 5.5 | 0.5 | 8.4 | Change to advance-by-recovery for improving recovery; cavings at top of core |
| 21R | 28 | 0750 | 412.5 | 419.5 | 7.0 | 6.6 | 94.6 | WOB, ROP increased |
| 22R | 28 | 0920 | 419.5 | 429.0 | 9.5 | 3.1 | 32.9 | |
| 23R | 28 | 1147 | 429.0 | 438.5 | 9.5 | 3.3 | 34.6 | |
| 24R | 28 | 1307 | 438.5 | 448.0 | 9.5 | 3.3 | 35.1 | FFF installation |
| 25R | 30 | 0733 | 447.2 | 456.2 | 9.0 | 2.3 | 25.9 | Caving at top 50 cm |
| 26R | 30 | 1015 | 456.2 | 457.8 | 1.6 | 0.3 | 18.1 | Stop coring because of BHA change |
| Cored totals: | 228.6 | 126.3 | 55.2 | |||||
Notes: CSF = core depth below seafloor. Hole was drilled from 457.8 to 590.5 m CSF. WOB = weight on bit, ROP = rate of penetration. FFF = free-fall funnel.
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