Continental subduction-triggered carbonate metasomatism of the lithospheric mantle: Implications for the deep carbon cycle

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Table 1. Mineral assemblage of the Qixia xenoliths in this study.Table 2. In situ Sr isotopic compositions of clinopyroxene in Qixia xenoliths measured by LA-MC-ICP-MS.Table S1-S5 lists the major (wt%) and trace (µg/g) element compositions in USGS reference glasses and minerals (including olivine, clinopyroxene, orthopyroxene, and spinel) from Qixia mantle xenoliths in this study. The major and trace elements of minerals were analyzed in situ by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with a spot size of 44 μm at the State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan (GPMR-CUG). Detailed operating conditions for LA-ICP-MS are described in Liu et al. (2008b). Off-line selection and integration of background and analytical signals, time-drift correction, and quantitative calibration were conducted using the ICPMSDataCal software (Liu et al., 2008b, 2010). Table S6 shows the equilibration temperatures of mantle xenoliths in this study calculated from selected different thermometers.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.