Table T10. Mineral saturation indices (SI) vs. depth calculated from pore water composition, Site 1201.
 
Depth
(mbsf)
Aluminum hydroxides Alumina clay Carbonates Feldspars Magnesian clay Sulfates Zeolites
Phase
SI
Phase
SI
Phase
SI
Phase
SI
Phase
SI
Phase
SI
Phase
SI
24.20 Boehmite -0.2 Kaolinite -1.6 Aragonite -0.3 Albite -7.3 Sepiolite -12.0 Anhydrite -0.6 Analcime -4.9

Diaspore 1.7

Calcite -0.1 Anorthite -10.8

Gypsum -0.1 Laumontite -12.4

Gibbsite -0.1

Celestite -0.9 Microcline -6.7

Strontianite -1.7 Leonhardite -11.5
51.20 Boehmite 0.1 Kaolinite 0.4 Aragonite 0.5 Albite -4.4 Sepiolite -7.4 Anhydrite -0.4 Analcime -2.6

Diaspore 2.1

Calcite 0.6 Anorthite -7.3

Gypsum 0.1 Laumontite -7.7

Gibbsite 0.3

Celestite -0.9 Microcline -3.8

Strontianite -1.1 Leonhardite -2.0
83.30 Boehmite 0.2 Kaolinite 0.7 Aragonite 1.0 Albite -3.5 Sepiolite -5.1 Anhydrite -0.1 Analcime -1.8

Diaspore 2.1

Calcite 1.1 Anorthite -5.5

Gypsum 0.3 Laumontite -5.8

Gibbsite 0.4

Celestite -0.9 Microcline -3.0

Strontianite -0.8 Leonhardite 1.8
146.98 Boehmite 0.7 Kaolinite 0.8 Aragonite 1.0 Albite -4.3 Sepiolite -6.8 Anhydrite 0.1 Analcime -2.1

Diaspore 2.6

Calcite 1.2 Anorthite -4.8

Gypsum 0.6 Laumontite -5.8

Gibbsite 0.8

Celestite 1-1.1 Microcline -4.1

Strontianite -1.2 Leonhardite 1.8
199.66 Boehmite 0.9 Kaolinite 1.6 Aragonite 1.2 Albite -3.3 Sepiolite -5.2 Anhydrite 0.2 Analcime -1.3

Diaspore 2.8

Calcite 1.4 Anorthite -3.3

Gypsum 0.6 Laumontite -4.0

Gibbsite 1.0

Celestite -1.4 Microcline -3.2

Strontianite -1.4 Leonhardite 5.4
267.16 Boehmite 0.9 Kaolinite 1.2 Aragonite 0.4 Albite -3.7 (Mg = 0.0)
Anhydrite 0.3 Analcime -1.5

Diaspore 2.8

Calcite 0.6 Anorthite -2.8

Gypsum 0.7 Laumontite -4.0

Gibbsite 1.0

Celestite -1.6 Microcline -3.9

Strontianite -2.4 Leonhardite 5.5
302.88 Boehmite 1.1 Kaolinite 1.6 Aragonite 1.2 Albite -3.7 Sepiolite -5.0 Anhydrite 0.3 Analcime -1.5

Diaspore 3.0

Calcite 1.3 Anorthite -2.8

Gypsum 0.7 Laumontite -3.9

Gibbsite 1.2

Celestite -1.6 Microcline -3.8

Strontianite -1.7 Leonhardite 5.6
383.96 Boehmite 1.0 Kaolinite 1.4 Aragonite 1.4 Albite -3.7 Sepiolite -4.7 Anhydrite 0.3 Analcime -1.6

Diaspore 2.9

Calcite 1.7 Anorthite -2.8

Gypsum 0.7 Laumontite -3.9

Gibbsite 1.1

Celestite -1.6 Microcline -3.9

Strontianite -1.5 Leonhardite 5.6
456.76 Boehmite 1.0 Kaolinite 1.4 Aragonite 1.4 Albite -3.8 Sepiolite -5.0 Anhydrite 0.3 Analcime -1.6

Diaspore 2.9

Calcite 1.6 Anorthite -2.7

Gypsum 0.7 Laumontite -3.8

Gibbsite 1.1

Celestite -1.7 Microcline -4.2

Strontianite -1.6 Leonhardite 5.9
495.20 Boehmite 1.0 Kaolinite 1.3 Aragonite 1.4 Albite -3.8 Sepiolite -4.5 Anhydrite 0.2 Analcime -1.6

Diaspore 2.9

Calcite 1.6 -2.75 -2.5

Gypsum 0.7 Laumontite -3.9

Gibbsite 1.1

Celestite -1.6 -3.93 -3.8

Strontianite -1.5 Leonhardite 5.7