Choice of ¹⁷ O correction affects clumped isotope (Δ ₄₇ ) values of CO ₂ measured with mass spectrometry

Abstract

The ¹⁷ O correction strategy employed by CO₂ and carbonate clumped-isotope researchers can have a large effect on the accuracy of Δ₄₇ values. Use of the traditional ¹⁷ O correction may have caused errors in published studies as large as 0.1 ‰ and may account for Δ₄₇ differences among laboratories and disagreement among previously published carbonate clumped isotope thermometry calibrations. Copyright © 2016 John Wiley & Sons, Ltd.