Table T6. Occurrence of carbonate-cemented ash, Site C0006. (See table notes.)
| Core, section, interval (cm) |
Depth CSF (m) |
Rubble/ In situ |
XRD | Description | Mineral composition (%) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Clay | Quartz | Plagioclase | Calcite | Total | |||||
| 316-C0006E- | |||||||||
| 30X-1, 0–5 | 220.33 | Rubble | First occurrence in core? Noted by driller; includes small amount of interlaminated mud. | ||||||
| 34X-1, 0–5 | 258.33 | Rubble | Dolomite | 3 fragments; 1 includes interlaminated mud. | 17.6 | 1.8 | 3.2 | 1.0 | 23.6 |
| 38X-1, 0–5 | 296.33 | Rubble | Fragment displays fine laminations. | ||||||
| 42X-3, 0–5 | 334.33 | Rubble | 2 fragments; both have mud-filled burrows; small one shows possible mineral lining. | ||||||
| 46X-1, 0–5 | 372.33 | Rubble | Dolomite | Sample has fine laminations. | 12.9 | 1.4 | 3.5 | 0.0 | 17.9 |
| 46X-1, 3–5 | 372.30 | Rubble | |||||||
| 47X-1, 0–4 | 381.83 | Rubble | Sample has fine laminations. | ||||||
| 316-C0006F- | |||||||||
| 12R-1, 7–32 | 496.40 | In situ | Layered at top, burrows in lower part. | ||||||
| 13R-2, 47–50 | 506.30 | In situ | Calcite | Central layer has fine laminations. | |||||
| 15R-CC, 29–30 | 527.02 | Rubble? | 2 fragments; both have possible mud-filled burrows. | ||||||
| 20R-1, 10–12 | 571.10 | In situ? | Calcite | Possible soft-sediment deformation in laminated layer. | |||||
| 23R-CC, 2–5 | 594.30 | Rubble? | Two rounded pebble-size pieces. | ||||||
Notes: Singular value decomposition was used to compute mineral composition factors, following the procedure of Fisher and Underwood (1995). Most samples archived under sample code “316SPCHIP;” also under XRD and PP codes. CSF = core depth below seafloor. XRD = X-ray diffraction.
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