Neogloboquadrina pachyderma LA-ICP-MS spectral files and stable isotope data from: Geochemical differences between alive, uncrusted and dead, crusted shells of Neogloboquadrina pachyderma: Implications for paleoreconstruction

# LA-ICP-MS Neogloboquadrina pachyderma spectral files from "Geochemical differences between alive, uncrusted and dead, crusted shells of Neogloboquadrina pachyderma: Implications for paleoreconstruction" [https://doi.org/10.5061/dryad.gtht76hsk](https://doi.org/10.5061/dryad.gtht76hsk) ## Description of the data and file structure The datasets herein include the LA-ICP-MS processed spectral files for each individual shell that was analyzed as part of the study published in *Geochemical differences between alive, uncrusted and dead, crusted shells of Neogloboquadrina pachyderma: Implications for paleoreconstruction*. LA-ICP-MS data was processed using the Python package LA-Tools (Branson et al., 2019) which follows established data reduction protocols (Longerich et al., 1996). Data processing protocols include despiking and signal smoothing to remove outliers, evaluating and applying any necessary drift correction using the bracketing SRM analyses, and removing average background counts from each data point. One folder (ending in "all elements") contains the processed LA-ICP-MS files that were calibrated using NIST 610 and NIST 612 SRMs, so that the data for all elements except for Na is corrected calibrated. The second folder (ending in "Na\_only") contains processed LA-ICP-MS files for the same shells, except the data was calibrated using NIST 610 and the USGS standard MACS-3; files from this folder should only be used to interpret the Na/Ca data. Each csv file included in the folders is for a single shell in which one or more pits were ablated into each chamber. When plotting the data from a single file, you will find multiple sections separated by a game in time. Each section within a given file represents a single ablated pit. In order to determine which section within each file corresponds to which chamber, please reference the excel file entitled "Crustvnocrust\_samplelog.xls". In addition to the processed spectral files contained in the .zip folders, the supplemental datasets referenced in the manuscript can be downloaded as well: **Dataset S1.** The inner 50% spectral averages and outer 50% spectral averages of Mg/Ca for each individual chamber and the Mg/Ca whole-shell average for each study specimen. Units are in mmol/mol. **Dataset S2.** The inner 50% spectral averages and outer 50% spectral averages of Na/Ca for each individual chamber and the Na/Ca whole-shell average for each study specimen. Units are in mmol/mol. **Dataset S3.** The inner 50% spectral averages and outer 50% spectral averages of Sr/Ca for each individual chamber and the Sr/Ca whole-shell average for each study specimen. Units are in mmol/mol. **Dataset S4.** The inner 50% spectral averages and outer 50% spectral averages of Ba/Ca for each individual chamber and the Ba/Ca whole-shell average for each study specimen. Units are in μmol/mol. **Dataset S5.** The inner 50% spectral averages and outer 50% spectral averages of Mn/Ca for each individual chamber and the Mn/Ca whole-shell average for each study specimen. Units are in μmol/mol. **Dataset S6.** The inner 50% spectral averages and outer 50% spectral averages of Zn/Ca for each individual chamber and the Zn/Ca whole-shell average for each study specimen. Units are in μmol/mol. **Dataset S7.** Stable isotope (δ13C and δ18O) data for small aliquots (2 to 3 shells per analysis) of study specimens. Units are in ‰ VPDB.