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Magnesium in subaqueous speleothems as a potential palaeotemperature proxy

Drysdale, Russell N; Couchoud, Isabelle; Zanchetta, G; Isola, I.; Regattieri, Eleonora; Hellstrom, John Charles; Govin, Aline; Tzedakis, C.; Ireland, Trevor; Corrick, Ellen; Greig, Alan; Holden, Peter


Few palaeoclimate archives beyond the polar regions preserve continuous and datable palaeotemperature proxy time series over multiple glacial-interglacial cycles. This hampers efforts to develop a more coherent picture of global patterns of past temperatures. Here we show that Mg concentrations in a subaqueous speleothem from an Italian cave track regional sea-surface temperatures over the last 350,000 years. The Mg shows higher values during warm climate intervals and converse patterns during...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Nature Communications
DOI: 10.1038/s41467-020-18083-7
Access Rights: Open Access


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