Figure F20. A. Sediment located immediately above the basaltic basement (interval 202-1240A-28H-3, 33-76 cm). B. X-ray diffractogram of the green grains forming the coarse fraction (>250 µm) in Section 202-1240A-28H-CC. Several peaks are indicative of smectite minerals (probably nontronite), and other peaks indicate plagioclase. The background hump around 27ۢ

Figure F20. A. Sediment located immediately above the basaltic basement (interval 202-1240A-28H-3, 33-76 cm). B. X-ray diffractogram of the green grains forming the coarse fraction (>250 µm) in Section 202-1240A-28H-CC. Several peaks are indicative of smectite minerals (probably nontronite), and other peaks indicate plagioclase. The background hump around 27°2

indicates volcanic glass.