Figure 8. Contour map of Cl concentration at Sites 1127, 1131, and 1129 overlying the interpretation of the seismic line joining the three sites. Note that the concentrations of equal Cl concentration crosscut the seismic sequences and appear to originate from a subhorizontal brine. Cl concentrations are given in millimoles per liter (mM). Normal sea water concentration is 559 mM.