This dataset contains supplementary tables S1, S2, S3 for our publication (Farfan et al, 2021), given as Excel files.

Supplementary Table S1 is the raw the processed SIMS-based δ18OArg data from the WiscSIMS Lab, Department of Geoscience, University of Wisconsin-Madison.Supplementary Table S2 is all of the mineralogical, oxygen isotope, and Kentucky Lake environmental data compiled for the study, set into nacre-transect space defined by the SIMS-pits taken during oxygen isotope analyses. S2 is also available as database table doi:10.1594/PANGAEA.938369Supplementary Table S3 has Pearson correlations for all of the data.