Articles | Volume 6, issue 2
https://doi.org/10.5194/gchron-6-125-2024
https://doi.org/10.5194/gchron-6-125-2024
Research article
 | 
17 Apr 2024
Research article |  | 17 Apr 2024

Evaluating manual versus automated benthic foraminiferal δ18O alignment techniques for developing chronostratigraphies in marine sediment records

Jennifer L. Middleton, Julia Gottschalk, Gisela Winckler, Jean Hanley, Carol Knudson, Jesse R. Farmer, Frank Lamy, Lorraine E. Lisiecki, and Expedition 383 Scientists

Data sets

Benthic foraminiferal δ¹⁸O alignments for IODP Site U1541, ODP Site 1090 and ODP Site 980-981 based on different tuning targets for the past ~3.5 Myr J. Middleton et al. https://doi.org/10.1594/PANGAEA.965845

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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.