Figure F13. A. Massive mud-bearing diatom ooze (top part) with one lamina in interval 178-1099A-2H-3, 31-32 cm, of Chaetoceros spp. spores, and the top part of a turbidite in interval 178-1099A-2H-3, 7-42 cm. B. Laminated diatom ooze showing millimeter-scale laminae in the lower part of interval 178-1099B-5H-5, 15-17 cm, and at 178-1099B-5H-5, 10-12 cm, with subhorizontal Phycosiphon burrows. (Continued on next page.)