Figure F7. Close-up photograph showing the top of Subunit IIIA (interval 194-1193B-1R-1, 19-38 cm; 35.2 mbsf). The uppermost core piece consists of skeletal packstone rich in planktonic foraminifers. Part of one surface is coated with dark brown to black material that may be phosphate (arrow). The underlying core pieces consist of tightly cemented skeletal packstone with reddish brown coloring.