Plate P4. A. Foraminiferal test with partially preserved original wall structure and isopacheous fringes of blocky, probably dolomitic, cement on the inside (Sample 201-1228B-6H-2, 97–101 cm; 50 mbsf). B. Quartz-rich dolomicrosparite (Sample 201-1228A-22H-1, 22–26 cm; 185.6 mbsf). C. Siliceous tube (center) is well preserved but enveloped by a decimicron-size dolomite rhomb (Sample 201-1228A-5H-1, 5–10 cm; 33.45 mbsf). D. Well-preserved diversely shaped diatom frustules. One of them (center) is enveloped by an euhedral dolomite rhomb (Sample 201-1228A-8H-4, 144–150 cm; 67.8 mbsf).