Figure F67. Close-up of very thinly laminated claystone (24-25 cm), overlain by a graded siltstone/mudstone interval (18-23.5 cm), then by very thinly laminated claystone (black shale) (12.5-18 cm), passing upward into weakly laminated, partly burrowed (8-12.5 cm) claystone. The paler claystone is burrowed down into the top of the dark laminated claystone at 12.5 cm (Subunit 5A: interval 210-1276A-33R-3, 8-25 cm).