Supporting information for "An unusually warm upper crust in the late Paleozoic North China continental arc: implications for the thermal modification of the giant Bayan Obo REE deposit
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The dataset is the supporting information for the manuscript entitled "An unusually warm upper crust in the late Paleozoic North China continental arc: implications for the thermal modification of the giant Bayan Obo REE deposit". This supporting information includes: 1. SI. Supporting Information includes sample descriptions (Text S1), detail analytical methods for mineral composition analyses, Laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS) U-Pb dating and trace element analyses and 40Ar/39Ar incremental heating analysis (Text S2), representative photomicrographs of samples (Figure S1), representative reflected-light, transmitted-light and CL images of zircons of samples for U-Pb dating and trace element analyses (Figures S2 to S9), inverse isochron plots (Figures S10). 2. SI. Table S1 is the electron microprobe analytical results of hornblende from the Permian granitoids near Bayan Obo deposit. 3. SI. Table S2 is the electron microprobe analytical results of plagioclase from the Permian granitoids near Bayan Obo deposit. 4. SI. Table S3 is the Al-in-hornblende geothermobarometric data of the Carboniferous-Permian arc plutons in the western part of the late Paleozoic northern North China continental arc (recalculated from Wu et al., 2014; Zhang and Zhao, 2017). 5. SI. Table S4 is the LA-ICP-MS U-Pb results of zircons from the samples for thermochronometric investigations. 6. SI. Table S5 is the 40Ar/39Ar analytical results of hornblende from sample 16219-3BY. 7. SI. Table S6 is the 40Ar/39Ar analytical results of biotite from sample 16147-1BY. 8. SI. Table S7 is the 40Ar/39Ar analytical results of biotite from sample 07148-5GY. 9. SI. Table S8 is the 40Ar/39Ar analytical results of biotite from sample 17099-1GY. 10. SI. Table S9 is the 40Ar/39Ar analytical results of hornblende from sample 10185-4BY. 11. SI. Table S10 is the 40Ar/39Ar analytical results of biotite from sample 10185-4BY. 12. SI. Table S11 is the 40Ar/39Ar analytical results of biotite from sample 13502-1BY. 13. SI. Table S12 is the 40Ar/39Ar analytical results of hornblende from sample 07173-1. 14. SI. Table S13 is the 40Ar/39Ar analytical results of biotite from sample 07173-1. 15. SI. Table S14 is the 40Ar/39Ar analytical results of hornblende from sample 08603-1. 16. SI. Table S15 is the 40Ar/39Ar analytical results of biotite from sample 08603-1. 17. SI. Table S16 is the 40Ar/39Ar analytical results of muscovite from sample 09219-1. 18. SI. Table S17 is the 40Ar/39Ar analytical results of muscovite from sample 09243-2. 19. SI. Table S18 is the 40Ar/39Ar analytical results of muscovite from sample 17105-1GY. 20. SI. Table S19 is the 40Ar/39Ar analytical results of biotite from sample 17107-1GY. 21. SI. Table S20 is the 40Ar/39Ar analytical results of hornblende from sample 17108-1BT. 22. SI. Table S21 is the 40Ar/39Ar analytical results of biotite from sample 17108-1BT.
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Electron microprobe analyses on plagioclase and hornblende were performed at the Wuhan Sample Solution Analytical Technology Company Limited, Hubei Province. Zircon LA-ICP-MS dating and trace element analyses were conducted at the Wuhan Sample Solution Analytical Technology Company Limited, Hubei Province and the Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences (CAGS) in Beijing. The 40Ar/39Ar incremental heating analytical results of 17 hornblende, muscovite and biotite samples (Tables S5 to S21) of the mid- to upper crustal exhumed rocks from a north-south corridor across the western part of northern North China continental arc and its retroarc foreland from Bayan Obo to Baotou. 40Ar/39Ar incremental heating analysis of 15 hornblende, muscovite and biotite samples (Tables S5 to S15, S18 to S21) was performed in Oregon State University (OSU) Argon Geochronology Laboratory, USA. Two muscovite samples (Tables S16, S17) were analyzed at the Laboratory of Isotope Thermochronology, Institute of Geology, CAGS, Beijing.