Racemization-derived late Devensian temperature reduction in Scotland

G. H. Miller, A. J.T. Jull, T. Linick, D. Sutherland, H. P. Sejrup, J. K. Brigham, D. Q. Bowen, J. Mangerud

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Abstract

We report here that shells of the marine bivalve mollusc Arctica islandica, collected near King Edward, Scotland, yield isoleucine epimerization D/L ratios only slightly higher than ratios in late-glacial specimens of the same taxon collected from nearby sites. We have determined the ages of two of the King Edward shells by tandem-accelerator mass spectrometry (TAMS) radiocarbon dating to be >40kyr. From the difference in D/L ratios, we calculate the average temperature depression during the last glaciation to have been ≥9 °C below Holocene temperatures.

Original languageEnglish (US)
Pages (from-to)593-595
Number of pages3
JournalNature
Volume326
Issue number6113
DOIs
StatePublished - Jan 1 1987

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    Miller, G. H., Jull, A. J. T., Linick, T., Sutherland, D., Sejrup, H. P., Brigham, J. K., Bowen, D. Q., & Mangerud, J. (1987). Racemization-derived late Devensian temperature reduction in Scotland. Nature, 326(6113), 593-595. https://doi.org/10.1038/326593a0