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Table T17. In situ conditions of PCS cores recovered from Site U1325.

Core Depth (mbsf) Temperature
(°C)
Pressure
(MPa)
Background
salinity
Methane
saturation
(mM)
Top Bottom
311-U1325C-
10P 256.1 257.1 18.4 24.6 34 143.2

Notes: Background salinity was extrapolated from adjacent cores (Table T3). Temperature was calculated from sediment depth assuming a seafloor temperature of 3.03°C and a thermal gradient of 60.0°C/km. Pressure was calculated from sediment and water depth (2195 mbsl). 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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