Table 1 Sediment composition in weight percent (for abundances > 3 wt%) from X-ray diffraction measurements after Vogt et al. (2002)
From: Weakening behavior of the shallow megasplay fault in the Nankai subduction zone
Sample | Depth [mbsf] | Comment | Quartz | Plagioclase | K-feldspar | Sum carbonates | Amphiboles cordierite | SiO2 nearly amorphous (Opal, glass) | Sum montmorillonites and smectites | Mixed layer clays | Illite | Glauconite | Kaolinite | Chlorite | Sum phyllosilicates |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Error (rel.%) |  |  |  ± 1 |  ± 2–5 |  ± 2–5 |  ± 2–3 |  ± 2–5 |  ± 5–10 |  ± 5 |  ± 5–10 |  ± 5–10 |  ± 5–10 |  ± 2–5 |  ± 2–5 |  ± 5 |
C0004D-29R-3 | 276.8–276.9 | Before shearing | 16 | 15 | 3 | 5 | 5 | 1 | 5 | 7 | 26 | 4 | 3 | 4 | 48 |
C0004D-29R-3 | 276.8–276.9 | 4× times remolding | 18 | 16 | 3 | 3 | 1 | 8 | 3 | 12 | 20 | 0 | 3 | 4 | 42 |