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Figure F18. Composite digital image, sediment lightness (L*), magnetic susceptibility, natural gamma radiation, and bulk density. A. Upper extreme of the Subunit IB cyclic interval. Natural gamma ray data are smoothed using a 5-point moving average.
B. Lower extreme of the Subunit IB cyclic interval.
![](images/04_f18a.jpg)
![](images/04_f18b.jpg)
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