Figure F36. Chemistry of crustal fluids from Sites 504 and 1256 and basement fluids from the Leg 168 transect of the eastern flank of the Juan de Fuca (JdF) Ridge plotted against temperature. Open diamond = uppermost basement fluid from Site 1256 estimated from the extrapolation of sediment pore water compositions measured during Leg 206, solid diamond = deep basement fluid from Hole 1256D collected during Expedition 309, solid square = ocean bottom seawater composition collected during Expedition 309, solid triangle = uppermost basement fluid from Site 504 (Mottl et al., 1983), open circles = Leg 168 basement fluids (Elderfield et al., 1999; Mottl et al., 2000).
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