Articles | Volume 6, issue 2
https://doi.org/10.5194/gchron-6-125-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-6-125-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Apr 2024
Research article |
| 17 Apr 2024
| 17 Apr 2024
Evaluating manual versus automated benthic foraminiferal δ18O alignment techniques for developing chronostratigraphies in marine sediment records
Jennifer L. Middleton
CORRESPONDING AUTHOR
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Julia Gottschalk
Institute of Geosciences, Kiel University, Kiel, Germany
Gisela Winckler
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Department of Earth and Environmental Sciences, Columbia University, New York, NY, USA
Jean Hanley
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Carol Knudson
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Jesse R. Farmer
School for the Environment, University of Massachusetts Boston, Boston, MA, USA
Frank Lamy
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Lorraine E. Lisiecki
Department of Earth Science, University of California, Santa Barbara, CA, USA
A full list of authors appears at the end of the paper.
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Short summary
We present oxygen isotope data for a new sediment core from the South Pacific and assign ages to our record by aligning distinct patterns in observed oxygen isotope changes to independently dated target records with the same patterns. We examine the age uncertainties associated with this approach caused by human vs. automated alignment and the sensitivity of outcomes to the choice of alignment target. These efforts help us understand the timing of past climate changes.
We present oxygen isotope data for a new sediment core from the South Pacific and assign ages to...
