Figure F71. Close-up of burrowed mudstone (101-105 cm), overlain by very finely laminated claystones (88-101 cm), and then passing up into a brilliantly colored interval (80-88 cm) interpreted to be caused by seafloor oxidization of black shale. The spotted appearance is mainly the result of iron oxide segregation, although some burrowing is also present near the top of the image (Subunit 5B: interval 210-1276A-36R-6, 80-105 cm).