AGE MODEL AND MASS ACCUMULATION RATES

A 390.6 mcd thick (371.3 mbsf) late Pleistocene turbidite sequence with intercalated hemipelagic sediment was recovered at Site 1232. The basal age of the core is 0.78 Ma, as the entire record is of normal polarity and within the Brunhes Chron (1n; see "Paleomagnetism"). This paleomagnetic interpretation is in agreement with the biostratigraphic age constraints (0.46-1.69 Ma; see "Biostratigraphy"). A conservative estimate of the average sedimentation rate is therefore ~475 m/m.y. A detailed age-depth model was not created aboard ship, as polarity chrons and biostratigraphic datums are not abundant enough at this site of extremely high sedimentation rates.

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