Abstract
Permafrost core sediments, associated with the last intrusion of the Ross Ice Shelf in the New Harbor region, were deposited in marine (0–85 m deep) as well as freshwater environments (100–125 m). Oxygen isotope ratio measurements on these cores provide palaeoclimatic information and show that the extension of the Ross Ice Shelf predates 150,000 yr BP, whereas the radiocarbon date of its retreat is about 5,800 yr b.p.
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Stuiver, M., Yang, I. & Denton, G. Permafrost oxygen isotope ratios and chronology of three cores from Antarctica. Nature 261, 547–550 (1976). https://doi.org/10.1038/261547a0
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DOI: https://doi.org/10.1038/261547a0
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