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Figure F17. Generalized Paleogene to early Neogene history of drift sedimentation at J-Anomaly Ridge and Southeast Newfoundland Ridge with images of the acoustic expression (right side of figure) of each major lithostratigraphic unit. Sedimentation rates refer to maximum linear sedimentation rate as determined from age-depth plots combined from the multiple sites in each of the two areas. Hatched areas represent hiatuses or intervals where age cannot be determined. Onset of drift sedimentation interpreted from combination of oldest occurrence of distinctive greenish gray clay-rich lithology and relatively high sedimentation rates.

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