Table T14. Mass balance at low-temperature alteration of the basalts from the Kerguelen Plateau.
Core, section,
interval (cm)
Description
H2O+
(wt%)
Density
(g/cm3)
Major elements (g/1000 cm3)
Minor elements (g/1000 cm3 x 10-3)
Si
Al
Fe
Mn
Mg
Ca
Na
K
P
Ni
V
Cu
Co
Zn
Nb
Zr
Y
Rb
Sr
Ba
La
Ce
Nd
Sm
Eu
Tb
Yb
Lu
H2O+
dv
Nonoxidizing alteration:
































183-1140A-
































35R-1, 35-42* Nonaltered basalt 0.74 2.93 656 231 279 3.2 120 250 59.8 11 1.5 190 929 498 144 226 10.5 226 85 26.4 352 82 11.7 32.2 28.1 10.5 3.8 2.8 7.9 1.3 0.74 2.93
34R-1, 117-121 Altered basalt 1.40 2.57 585 216 220 3.3 115 199 51.0 1.8 1.3 216 969 411 159 239 10.0 185 66.8
283 123 10.0 24.2 21.1 7.7 2.8 1.9 6.2 1.0 1.40 2.57
Percent difference between altered and nonaltered basalt: -10.8 -6.5 -21.1 +3.1 -4.2 -20.4 -14.7 -83.6 -13.3 +13.7 +4.3 -17.5 +10.4 +5.7 -4.8 -18.1 -21.4
-19.6 +50.0 -14.5 -24.8 -24.9 -26.7 26.3 -32.1 -21.5 -23.0

Oxidizing alteration:
































183-1137A-
































39R-2, 114-119* Nonaltered basalt 0.99 2.28 578 178 168 4.8 71.2 43.7 57.0 105 3.3 68.4 689 91.2 52.4 198 27.4 410 79.8 171 570 570 57 114 61.6 14.4 4.6 2.5 5.0 0.8 0.99 2.28
27R-1, 100-105 Altered basalt 2.03 2.11 493 163 173 1.9 84.7 61 52.5 55.1 3.5 67.5 612 90.7 71.7 198 38.0 506 76.0 73.9 928 612 57 124 67.5 16.5 5.1 2.5 5.1 0.8 2.03 2.11
Percent difference between altered and nonaltered basalt: -14.7 -8.4 +3.0 -60.4 +19.0 +39.6 -7.9 -47.5 +6.0 -1.3 -11.2 -0.5 +2.6 0 -38.7 +23.4 -4.8 -56.8 +62.8 +7.4 0 +8.8 +9.6 +14.6 +10.7 0 +2.0 0

Note: * = abundance of elements for nonaltered basalt.