Table T21. In situ conditions of PCS cores recovered from Site U1328.
| Core | Depth (mbsf) |
Temperature (°C) |
Pressure (MPa) |
Salinity |
Methane saturation (mM) |
|
|---|---|---|---|---|---|---|
| Top | Bottom | |||||
| 311-U1328B- | ||||||
| 4P | 14.5 | 15.5 | 4.3 | 12.9 | 44.0 | 50.2 |
| 7P | 26.0 | 27.0 | 4.9 | 13.0 | 34.0 | 52.6 |
| 311-U1328C- | ||||||
| 5P | 92.0 | 93.0 | 8.5 | 13.7 | 33.1 | 68.3 |
| 311-U1328E- | ||||||
| 10P | 92.0 | 93.0 | 8.5 | 13.7 | 33.0 | 68.3 |
| 13P | 233.0 | 234.0 | 16.1 | 15.0 | 30.0 | 142.3 |
Note: Salinity was analyzed in interstitial water samples from Cores 311-U1328B-4P, 7P, 311-U1328C-5P, and 311-U1328E-13P and extrapolated from adjacent XCB cores for Core 311-U1328E-10P (Table T1). Temperature was calculated from sediment depth assuming a seafloor temperature of 3.5°C and a thermal gradient of 54°C/km. Pressure was calculated from sediment and water depth. Methane saturation was calculated based on sediment and water depth, seafloor temperature, thermal gradient, and salinity according to Xu (2002, 2004).
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