Figure F6. Color reflectance red/blue (680 nm/420 nm) ratio for Holes 1212A and 1212B. The increase in red/blue ratios at 63 mbsf indicates a shift toward more oxic redox conditions associated with lower sedimentation rates and more oxygen-rich bottom waters.

Figure F6. Color reflectance red/blue (680 nm/420 nm) ratio for Holes 1212A and 1212B. The increase in red/blue ratios at 63 mbsf indicates a shift toward more oxic redox conditions associated with lower sedimentation rates and more oxygen-rich bottom waters.