Abstract:
Here we report I-CDES standardized values for a suite of 11 carbonates that are commonly measured by the clumped isotope community to aid future comparisons of non-I-CDES datasets. In addition, seventeen dolomite samples (25–1200°C) and five apatite samples (1–38°C) of known precipitation temperature were measured using carbonate-based standardization. Excellent agreement between calcites and dolomites heated to similar temperatures (1100–1200°C) suggests no mineral-specific differences in absolute acid fractionation factor. We show that calcite and dolomite regressions largely agree, but are sensitive to sample characteristics, regression method, and how equations are statistically compared. We suggest that there is no need for a dolomite-specific clumped isotope calibration, although our results suggest further work is necessary to determine the influence of sample characteristics on this relationship. The apatite calibration equation defined in this study is statistically indistinguishable from calcite-based calibrations; we corroborate previous findings that an apatite-specific calibration is unnecessary.
How to cite this dataset:
Anderson, N. T., Bonifacie, M., Jost, A. B., Siebert, J., Bontognali, T., Horita, J., Muller, I., Bernasconi, S. M., Bergmann, K. D., 2024. Clumped isotope calibration data for dolomite and apatite; non-InterCarb carbonate standard data, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/113081. Accessed 2024-07-27.
Related
Publication(s):
Anderson, N.T., Bonifacie, M., Jost, A.B., Siebert, J., Bontognali, T., Horita, J., Müller, I. A., Bernasconi, S.M., and Bergmann, K.D., (2023), "Re-assessing the need for apatite- and dolomite-specific calibrations of the carbonate clumped isotope thermometer." Geochemistry, Geophysics, Geosystems.
User Contributed Keyword(s):
Calibration, dolomite, apatite, standardization, clumped isotopes