A Unified Clumped Isotope Thermometer Calibration (0.5–1,100°C) Using Carbonate‐Based Standardization
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Date
2021-04-16Type
- Journal Article
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Cited 38 times in
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Abstract
The potential for carbonate clumped isotope thermometry to independently constrain both the formation temperature of carbonate minerals and fluid oxygen isotope composition allows insight into long‐standing questions in the Earth sciences, but remaining discrepancies between calibration schemes hamper interpretation of temperature measurements. To address discrepancies between calibrations, we designed and analyzed a sample suite (41 total samples) with broad applicability across the geosciences, with an exceptionally wide range of formation temperatures, precipitation methods, and mineralogies. We see no statistically significant offset between sample types, although the comparison of calcite and dolomite remains inconclusive. When data are reduced identically, the regression defined by this study is nearly identical to that defined by four previous calibration studies that used carbonate‐based standardization; we combine these data to present a composite carbonate‐standardized regression equation. Agreement across a wide range of temperature and sample types demonstrates a unified, broadly applicable clumped isotope thermometer calibration. Show more
Publication status
publishedExternal links
Journal / series
Geophysical Research LettersVolume
Pages / Article No.
Publisher
American Geophysical UnionSubject
calibration; calcium carbonate; carbonate geochemistry; clumped calibration, dolomite, PaleothermometerMore
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Citations
Cited 38 times in
Web of Science
Cited 40 times in
Scopus
ETH Bibliography
yes
Altmetrics