Correction to: Nature Geoscience https://doi.org/10.1038/s41561-019-0476-6, published online 28 October 2019.

In the version of this Article originally published, the following sentence was missing from the Acknowledgements and has now been added: ‘The authors wish to thank the CSIRO Marine National Facility (MNF) for its support in the form of sea time on RV Investigator, support personnel, scientific equipment and data management. All data and samples acquired on the voyage are made publically available in accordance with MNF policy.’