Preprints
https://doi.org/10.5194/essd-2020-381
https://doi.org/10.5194/essd-2020-381

  14 Dec 2020

14 Dec 2020

Review status: this preprint is currently under review for the journal ESSD.

A Global Compilation of U-series Dated Fossil Coral Sea-level Indicators for the Last Interglacial Period (MIS 5e)

Peter M. Chutcharavan1,2 and Andrea Dutton1 Peter M. Chutcharavan and Andrea Dutton
  • 1Department of Geoscience, University of Wisconsin – Madison, Madison, Wisconsin, 53706, USA
  • 2Department of Geological Sciences, University of Florida, Gainesville, Florida, 32611, USA

Abstract. This dataset is a comprehensive, global compilation of published uranium series (U-series) dated fossil coral records from ~150–110 thousand years ago, as well as associated elevation measurements and sample metadata. In total, 1312 U-series measurements from 994 unique coral colonies are included in the current version of the dataset, all of which have been normalized and recalculated using the same decay constant values. Two example geochemical screening criteria have been included to assist users with identifying altered fossil corals that display geochemical open-system behaviour, and the originally published interpretations on age quality have been preserved within the sample metadata. Additionally, a clear distinction has been made between coral colonies that are in primary growth position, which may be used for relative sea-level reconstructions and colonies that have been transported/reworked, which cannot be used for these purposes. Future research efforts involving fossil coral sea-level reconstructions should emphasize an integrated and holistic approach that combines careful assessment of U-series age quality with high-precision surveying techniques and detailed facies/stratigraphic observations. This database is available at http://doi.org/10.5281/zenodo.4309796 (Chutcharavan and Dutton 2020).

Peter M. Chutcharavan and Andrea Dutton

 
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Peter M. Chutcharavan and Andrea Dutton

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Global database of U-series dated fossil coral sea-level indicators for the Last Interglacial period Peter M. Chutcharavan and Andrea Dutton https://doi.org/10.5281/zenodo.4309796

Peter M. Chutcharavan and Andrea Dutton

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Short summary
This paper summarizes a global database of fossil coral U-series ages for the Last Interglacial period and was compiled as a contribution to the World Atlas of Last Interglacial Shorelines. Each entry contains relevant age, elevation and sample metadata, and all ages and isotope activity ratios have been normalized and recalculated using the same decay constant values. We also provide two example geochemical screening criteria to help users assess sample age quality.