Supplementary materials Liu, S.-A., et al., Copper isotopic composition of the silicate Earth Contents: Fig. S1: Micrograph of orogenic peridotites analyzed in this study Fig. S2: Result of long-term Cu isotope analysis of in- house Cu standard Fig. S3: Correlation of Cu with S concentration for cartonic peridotites Fig. S4: Correlation of Al 2 O 3 and Cu with MgO for cratonic peridotites Fig. S5: Correlation of 65 Cu with MgO and Cu concentration for cratonic peridotites
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ars.els-cdn.com€¦ · Web viewFig. S1 Micrograph of orogenic peridotites analyzed in this study, showing the presence or lacking of metasomatized minerals such as phlogopite.
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Supplementary materials
Liu, S.-A., et al., Copper isotopic composition of the silicate Earth
Contents:
Fig. S1: Micrograph of orogenic peridotites analyzed in this study
Fig. S2: Result of long-term Cu isotope analysis of in-house Cu standard
Fig. S3: Correlation of Cu with S concentration for cartonic peridotites
Fig. S4: Correlation of Al2O3 and Cu with MgO for cratonic peridotites
Fig. S5: Correlation of 65Cu with MgO and Cu concentration for cratonic peridotites
Table S1: Analytical methods and data of major and trace elements of orogenic
peridotites
Table S2 Copper isotopic compositions of cratonic and orogenic peridotites
Table S3 Copper isotopic compositions of basalts, andesites and dacites
References: cited in the supplementary materials.
Fig. S1 Micrograph of orogenic peridotites analyzed in this study, showing the presence or lacking of metasomatized minerals such as phlogopite. Ol: olivine; Grt: garnet; Opx: orthopyroxene; Serp: serpentine; ZMF: Zimafang, Dabie-Sulu orogen; RBZ: Dabie-Sulu orogen.
Figure S2 Long-term analysis of in-house Cu standard (YS-Cu) against NIST 976 from August, 2012 to August, 2014, yielding an average 65Cu value of 0.53‰ with two standard deviations of ±0.03‰ (N = 69).
Figure S3 Correlation of Cu with S concentration for cartonic peridotite xenoliths from Damaping, the North China Craton. The positive correlation indicates that Cu in the peridotites is mainly hosted by sulfides.
Figure S4 Correlation of Al2O3 and Cu concentrations with MgO for peridotites studied. The data are from Rudnick et al. (2004) and Liu J. et al. (2010; 2011). The star represents the primitive mantle (PM) with MgO = 38.8 wt.%, Al2O3 = 4.4 wt.%, and Cu = ~28 ppm (Sun and McDonough, 1989).
Figure S5 Correlation of Cu isotopic compositions with MgO and Cu concentrations for peridotites reported in this study. The data from Fansi (NCC), in which all peridotites were metasomatized, are separately plotted in the lower diagram. Except for sample FS2-09, the peridotites from Fansi display positive correlation between 65Cu and Cu concentration.
Table S1 Major and trace elements of orogenic peridotites reported in this study.
Analytical Methods: Major elements were analyzed by wet-chemistry methods at the China University of Geoscience, Beijing, China. Analytical uncertainties for the majority of major elements were better than 1%. For trace element determination, whole-rock powder (~50 mg) was dissolved in a mixture of HF + HNO3 at 190°C using Parr bombs for ~ 72 hrs. Dissolved samples were diluted to 50 ml using 1% HNO3 before analyses. Analyses were accomplished using an inductively coupled plasma mass spectrometer (ICP-MS) at the University of Science and Technology of China. Reproducibility was better than 5% for elements with concentrations >10 ppm and less than 10% for those <10 ppm.
Table S2 Copper isotopic compositions of mantle peridotites reported in this study.
Sample No. SiO2 Al2O3 MgO Mg# S ƒo2 Cu 65Cu 2SD nCratonic peridotites
Note: Major elements and ƒo2 values of peridotites are from Rudnick et al. (2004) and Liu J. et al. (2010, 2011). Major element compositions of the garnet peridotite sample (Alps-01) were measured by wet-chemistry methods in this study with an analytical uncertainty of better than 2%. Cu concentrations were measured in this study by solution ICP-MS with an uncertainty of better than ±10%. M and N behind sample number indicate metasomatized and non-metasomatized, respectively.
Table S2 Continued
Location Sample No. Type Cu 65Cu 2SD nOrogenic peridotites
Alps orogenic belt Alps-01 Metasomatized 48.8 -0.10 0.05 3
Note: EVF: Kamchatka Eastern Volcanic Front; CKD: Central Kamchatka, Depression; SR: Kamchatka Sredinny Ridge back arc; NCKD: North Central Kamchatka Depression. The numbers bracketed in the sample no. of arc basalts, andesites and dacites represent the distance to the trench (km). *The three andesites have adakitic geochemical signature. Major element compositions of the continental basalt from Antarctica and OIB from Reunion, LaPalma and Hawaii were measured by wet-chemistry methods in this study with an analytical uncertainty of better than 2%. Cu concentrations of these samples were measured in this study by solution ICP-MS with an uncertainty of better than ±10%.
References cited in the supplementary materials: Liu, J.-G., Rudnick, R. L., Walker, R. J., Gao, S., Wu, F. Y., Piccoli, P. M., 2010. Processes
controlling highly siderophile element fractionations in xenolithic peridotites and their influence on Os isotopes. Earth Planet. Sci. Lett. 297, 287-297.
Liu, J.-G., Rudnick, R. L., Walker, R. J., Gao, S., Wu, F.-Y., Piccoli, P. M., Yuan, H., Xu, W.-L., Xu, Y.-G., 2011. Mapping lithospheric boundaries using Os isotopes of mantle xenoliths: An example from the North China Craton. Geochim. Cosmochim. Acta 75, 3881-3902.
Rudnick, R. L., Gao, S., Ling, W. L., Liu, Y. S., Mcdonough, W. F., 2004. Petrology and geochemistry of spinel peridotite xenoliths from Hannuoba and Qixia, North China Craton. Lithos 77, 609-637.
Sun, S., Mcdonough, W., 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geological Society London Special Publications 42, 313.