Table
T18. Water chemistry data for downhole water sampler, temperature,
and pressure probe sampling of borehole fluids, Holes 1188B and 1188F.
Hole
1188F
Hole:
1188B
Sample 1
Sample 2
Seawater
Date:
22 Dec
28 Dec
29 Dec
22 Dec
Water
depth (mbsf)
3
107
207
Surface
Temperature
(°C)
6
12
21
30
pH
7.89
8.04
7.74
8.4
Alkalinity
(mmol/L)
2.06
2.277
1.909
2.18
Salinity
(
)31
34
35
34
IAPSO
Na+
(mmol/L
433.3
479.6
470.0
480
K+
(mmol/L)
9.5
10.4
10.2
10.4
Mg2+
(mmol/L)
50.2
54.8
54.6
54
Ca2+
(mmol/L)
11.3
10.0
10.5
10.5
Cl-
(mmol/L)
506
562
552
559
SO42-
(mmol/L)
28.7
29.6
29.1
28.9
B3+
(µmol/L)
341
438
423
450
Mn+
(µmol/L)
278
3
4
—
Fetot
(µmol/L)
7
7
19
—
Sr2+
(µmol/L)
98
104
101
87
Ba2+
(µmol/L)
6
6
6
—
Li+
(µmol/L)
36
26
27
27
Notes: Fetot = total iron. IAPSO = seawater standard. — = not analyzed.