Supplementary Data to: "20,000 days in the life of a giant clam reveal late Miocene tropical climate variability"

The following tables (Tab. S1-S7) present the detailed data and analytical results from Arndt et al. (2025), including isotopic measurements, elemental ratios, standard reference material accuracies and external precisions, and variable settings applied during data processing.

Table S1 (all tabs): Final SIS Sr isotopic data corrected for baselines, interferences, and mass bias.

Table S2 (all tabs): Final seasonally resolved Sr isotopic data corrected for baselines, interferences, and mass bias.

Table S3: Results of the measured standard reference materials compared to the known reference values, with accuracy and external precision for each element. MACS-3 B reference values are taken from LA-ICPMS data with medium mass resolution and a 193 nm wavelength (Jochum et al., 2012), while the Na, Mg, Sr, and Ba reference values are solution-based USGS data from Stephen Wilson (pers. comm., 2010). For KL2-G, we referred to values from the GeoReM database 658 (Jochum et al., 2006).

Table S4: Variable settings applied in the Python script Daydacna (Arndt et al., 2023). Daydacna is available at https://doi.org/10.5281/zenodo.8334594.

Table S5: LA-ICPMS elemental ratio data against distance [µm] and calculated time [days].

Table S6: Dual clumped isotopic data and corresponding temperatures after Fiebig et al. (2021).

Table S7: Final C and O isotopic data; δ¹³C and δ¹⁸O relative to VPDB.