Figure F15. A, B. Pressure and temperature variations at Site 1253, following Davis and Villinger (2006). C. Ca and Mg concentration variations through time in formation fluids collected by OsmoSampler 1 from Kastner et al. (2005). Note abrupt change in composition when borehole was temporarily open to seawater during the attempted instrument recovery in March 2004. UTC = Universal Time Coordinated.

Figure F15. A, B. Pressure and temperature variations at Site 1253, following Davis and Villinger (2006). C. Ca and Mg concentration variations through time in formation fluids collected by OsmoSampler 1 from Kastner et al. (2005). Note abrupt change in composition when borehole was temporarily open to seawater during the attempted instrument recovery in March 2004. UTC = Universal Time Coordinated.