Table T10. Summary of sediment mineralogy from X-ray diffraction, Hole M0029A. (See table notes.)
Intensity ratios | Mean | Max |
---|---|---|
Clay minerals | 14.0 | 26.9 |
Kaolinite | 5.6 | 12.8 |
Micas and Illite | 4.1 | 7.4 |
Mixed layered clays | 3.1 | 4.1 |
Smectite | 1.2 | 2.6 |
Carbonates | 7.1 | 23.1 |
Mg-rich calcite | 0.9 | 2.5 |
Calcite | 2.0 | 6.4 |
Siderite | 1.2 | 4.2 |
Rhodochrosite | 1.4 | 4.0 |
Dolomite and ankerite | 0.6 | 3.6 |
Aragonite | 1.1 | 2.6 |
Detrital minerals | 70.6 | 103.1 |
Quartz | 58.9 | 70.3 |
Plagioclase | 3.8 | 13.4 |
Chlorite | 2.3 | 4.6 |
K-Feldspar | 2.0 | 4.7 |
Pyroxene | 1.5 | 5.3 |
Zeolites | 0.8 | 2.1 |
Gibbsite | 0.3 | 1.2 |
Epidote | 0.6 | 1.1 |
Amphibole | 0.3 | 0.5 |
Authigenic minerals | 8.4 | 16.3 |
Pyrite | 2.8 | 5.4 |
Glauconite | 1.4 | 3.5 |
Goethite | 1.8 | 2.9 |
Apatite | 1.0 | 2.2 |
Magnetite | 0.9 | 1.5 |
Barite | 0.5 | 0.8 |
Total | 100.0 | 169.3 |
Notes: The original sum for the mean of all measured peak intensity ratios was 93.2%. After elimination of all clay minerals (4.55–4.4 Å, 4.1%), gypsum (1.0%), and halite (2.0%), this sum became 86.1%, which was then renormalized to 100% above.
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