Sr data.xlsx

This dataset includes strontium isotope (⁸⁷Sr/⁸⁶Sr) ratio measurements from Well A and Well B. Data columns include sample depth (in feet and meters), formation name, material type, measured ⁸⁷Sr/⁸⁶Sr ratio, analytical error, and interpreted numerical age (in million years, Ma). Ages were calculated using the global seawater ⁸⁷Sr/⁸⁶Sr curve from McArthur and Howarth (GTS2020 timescale), based on linear regression fitting.The dataset also includes the reference age-to-ratio table from McArthur and Howarth (used for calibration), listing mean, minimum, and maximum ⁸⁷Sr/⁸⁶Sr ratios for each geological age.This dataset was used to produce Table 1 and to generate Figure 1 (age-depth plot based on ⁸⁷Sr/⁸⁶Sr-derived ages). Age interpretations are based on linear regression against the global seawater ⁸⁷Sr/⁸⁶Sr curve of McArthur and Howarth (GTS2020 timescale).