Figure F7. Magnetic susceptibility and color reflectance red/blue (680 nm/420 nm) ratio for Hole 1209B. The increase in red/blue ratios at 85 mbsf indicates a shift toward more oxic redox conditions associated with lower sedimentation rates and more oxygen-rich bottom waters. The accurate correction factor for the raw instrument magnetic susceptibility values is 0.68 x 10-5.

Figure F7. Magnetic susceptibility and color reflectance red/blue (680 nm/420 nm) ratio for Hole 1209B. The increase in red/blue ratios at 85 mbsf indicates a shift toward more oxic redox conditions associated with lower sedimentation rates and more oxygen-rich bottom waters. The accurate correction factor for the raw instrument magnetic susceptibility values is 0.68 x 10^-5.