Table 961-L-1. Interstitial water analyses from Site 961, Holes A and B.

Core,     section, interval (cm)  Depth (mbsf)        IW Vol (ml)         pH        Alkalinity (mM)     Salinity (g/kg)     Calcium (mM)        Magnesium (mM)      Strontium (æM)      Chloride (mM)       Sulfate (mM)        Ammonium (æM)  P otassium (mM) Silica (æM)Iron (æM)Manganese (æM))
                                                                                                                                                      
159-961A-                                                                                                                                             
1R-2, 145 150       2.95      42        7.44      2.01      37         10.51    50.84     94.00     554       24.6      95        12. 4     327       2.1       1.5
3R-2, 145 150       16.1      40        7.36      3.28      36         10.48    49.29     111.00    555       25.4      145       12. 3     182       30.8      1.4
28R-1, 140 150      257       11                                       16.25    33.12     374.00    557       8.0       699       8. 0      227                 1.1
30R-2, 140 150      277       8                                        16.47    33.65     406.00    559       7.5       750       7. 4      200                 0.7
                                                                                                                                                      
159-961B-                                                                                                                                             
4R-2, 140 150       263       5                                        16.06    33.65     373.00    547       7.4       573       7. 5      198                 0.9
7R-1, 140 150       286       3                                        16.3     34.81     403.00    565       9.6       712       8. 0      125                 0.8
10R-4, 0 10         318       5                                        16.5     29.03     468.00    548       6.6       926       6. 8      167                 0.6
13R-1, 140 150      334       0.5                                      15.15    26.48                         5.9                 5. 9                           
                                                                                                                                                      
Note: All reported calcium concentrations were determined by titration except Sample 159-961B-13R-1. Due to the small volume of interstitial water extracted for this sample, Ca was determined by ion chromatograph. All magnesium analyses were made by ion chromatography. For an inter-comparison of titration and ion chromatograph calcium and magnesium data see the  Inorganic Geochemistry  section of the  Explanatory Notes  chapter, in this volume.