Table T15. Summary of pressure coring operations at Site U1329.
| Core |
Core-top depth (mbsf) |
Length recovered* (cm) |
Length curated (cm) |
Pressure at core depth (MPa) |
Pressure recovered (MPa) |
Comments | |
|---|---|---|---|---|---|---|---|
| Logged† | Gauge‡ | ||||||
| 311-U1329C- | |||||||
| 7P | 55.6 | 86 | 75 | 10.1 | 42 |
— |
Normal operation |
| 14P | 114.6 | — | 90 | 11.4 | 0 |
— |
Vent valve left open |
| 23P | 188.5 | 90 | 100 | 11.7 | 0.35 | 0.36 | Sheared off bit during coring |
| 311-U1329E- | |||||||
| 5P | 33.5 | — | 60 | 10.1 | 0 |
— |
Ball valve did not close |
| 7P | 73.5 | 95 | 86 | 10.2 | 48 | 49 | Normal operation |
| 8Y | 104.0 | — | 79 | 10.8 | 0 |
— |
Inner core barrel over-retracted |
| 9E | 114.5 | — | 100 | 10.9 | 85 | 85 | Water in accumulator |
| 10P | 125.0 | 98 | 95 | 10.8 | 54 | 5.3 | Normal operation |
Notes: Water depth at Site U1329 is 946 mbsl. P = Pressure Core Sampler (PCS), Y = Fugro Percussion Corer (FPC), E = HYACE Rotary Corer (HRC). * = based on x-ray imagery and gamma ray density profiling prior to degassing. † = last pressure recorded before data logger disconnected from corer autoclave. Temperature 2°–4°C unless otherwise noted. ‡ = pressure measured when autoclave pressure transducer connected to computer (PCS cores) or external gauge (PCS, FPC, HRC cores). Pressure measured at 7°C unless otherwise noted. — = no data.
Previous | Close | Next | Top of page