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. (Continued on next page.)

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.