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Figure F47. Detailed view of possible unit boundary zone (interval 338-C0002J-5R-8, 98–126 cm). Variations in Fe and Al content were obtained from XRF. A discrete XRD sample (marked X) shows only a trace of calcite, whereas analyses of other silty claystones in this section at 0–1 and 30–31 cm show calcite with amounts of 18.0% and 7.2%, respectively. Cored interval is between 927 and 932 mbsf.

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