Previous   |   Close   |   Next

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.

Previous   |   Close   |   Next  |  Top of page