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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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