Ultra-high pressure metamorphism and geochronology of gar-net clinopyroxenite in the Paleozoic Dunhuang Orogenic Belt, northwestern China

Supplementary Materials: The following are available online at www.mdpi.com/xxx/s1, Figure S1: X-ray compositional mapping of MnO, MgO, FeO, and CaO components of representative garnet porphyroblast in samples 17D80, 17D90, and 17D95 , Figure S2: Chemical compositional profiles of the garnet porphyroblast in samples 17D78, 17D80, 17D90, and 17D95, Figure S3: Classification of clinopyroxene in different samples (classification of Morimoto [47]), Figure S4: EMPA analytical transverses of clinopyroxene (sample 17D78), Figure S5: EMPA analytical transverses of clinopyroxene (sample 17D80), Figure S6: EMPA analytical transverses of clinopyroxene (sample 17D90), Figure S7: EMPA analytical transverses of clinopyroxene (sample 17D95), Figure S8: Backscattered electron images of titanite separated from garnet clinopyroxenite samples for SIMS U-Pb dating. (a) Sample 17D78. (b) Sample 17D95. (c) Sample 17D90. The circles with red figures represent analytical spots. The yellow numbers are the respective 207Pb-based common lead corrected ages involved in the calculation for samples 17D78 and 17D90, while the white and yellow numbers are the respective 207Pb-based common lead corrected ages both involved in the calculation for sample 17D95, and obtained the younger and older mean ages, respectively, Figure S9: Classification of protoliths of garnet clinopyroxenite. (A) Nb/Y vs. Zr/TiO2 plot (after Pearce [64]); and (B) Zr vs. Ti discrimination diagram (after Pearce [65]), Figure S10: Chondrite-normalized REE patterns (A) and primitive mantle-normalized spidergrams (B) for garnet clinopyroxenites. The chondrite and primitive mantle values are from Sun and McDonough [66], Table S1: Chemical compositions of the representative minerals in sample 17D78, Table S2: Chemical compositions of the representative minerals in sample 17D80, Table S3: Chemical compositions of the representative minerals in sample 17D90, Table S4: Chemical compositions of the representative minerals in sample 17D95, Table S5: EMPA analysis of rutile and temperature calculation results with different aSiO2, Table S6: Zr contents in titanite and calculated temperatures with various aSiO2, Table S7: Chemical compositional profiles of the garnet, Table S8: Chemical compositional profiles of the clinopyroxene, Table S9: SIMS U–Th–Pb analytical data for titanite from garnet clinopyroxenite, Table S10: Bulk-rock compositions for both major and trace elements of garnet clinopyroxenite, Table S11: Pressure-temperature (P-T) conditions retrieved for the different metamorphic stages of garnet clinopyroxenite.