Figure F4. Core image of typical laminations observed in split sections of cores from Adélie Site U1357 (interval 318-U1357A-6H-4, 110–128 cm). Nine to ten laminations, defined here as pairs of color bands, one light and one dark, can be identified. If these features are produced annually, the laminations count over this 18 cm interval implies a sedimentation rate of close to 2 cm/y, similar to average sedimentation rates for the upper 50 m of the Adélie Basin sedimentary section derived from radiocarbon dating (Costa et al., 2007).
Previous | Close | Next | Top of page