Abstract
One of the most important projects envisaged ever since the possibility emerged of making tandem accelerator mass-spectrometric radiocarbon determinations has been that of investigating changes in the radiocarbon age of the deep ocean1. Initial attempts to achieve this2 were thwarted by difficulties imposed by bioturbation, because these workers used core V28–238 with an accumulation rate of only ∼1.5 cm kyr−1, thus emphasizing the need to work in a core with a higher accumulation rate. Working in the glacial section of core TR163–31B with an accumulation of 10 cm kyr−1, we show here that the ventilation age of Pacific deep water was about 500 years greater in last glacial times than it is today.
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Shackleton, N., Duplessy, JC., Arnold, M. et al. Radiocarbon age of last glacial Pacific deep water. Nature 335, 708–711 (1988). https://doi.org/10.1038/335708a0
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DOI: https://doi.org/10.1038/335708a0
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