Data for: Metamorphic evolution of Daqingshan supracrustal rocks and garnet-bearing granite from the North China Craton: constraints from phase equilibria modelling, geochemistry, and SHRIMP U-Pb geochronology

3.1 Electron probe microanalysis of minerals The mineral compositions for the supracrustal rocks and the garnetbearing granite were analysed by using an electron microprobe at the Key Laboratory of Orogen and Crustal Evolution of the Ministry of Education, Peking University, Beijing, China, using operating conditions of 5 kv accelerating voltage, 1 × 10–8 A beam current, and 1 μm spot diameter. For calibration, 53 standard samples of well-defined natural minerals (SPI Supplies, West Chester, Pennsylvania, USA) were used. The results are presented in SupplementaryTables 1 to 5.
3.2 Whole-rock geochemistry The major-element compositions of the minerals were measured using an
Axios X-ray fluorescence (XRF) spectrometer at the China National Research Center for Geoanalysis, Beijing, China. Trace-element analysis was conducted using an Elan 9000 inductively coupled plasma mass spectrometer (ICP–MS; PerkinElmer, Waltham, Massachusetts, USA) with better than 10% accuracy of analysis. The major and trace element compositions and analytical precisions for each element are given in Supplementary Table 6.
3.3 Zircon U–Pb dating Zircon crystals were obtained using standard crushing and separation techniques, and U–Pb dating was conductedusing the SIMS II ion microprobe at the Beijing SIMS Center, Chinese Academy of Geological Sciences (CAGS). The
hand-picked crystals together with the TEMORA standard, having a conventionally determined 206Pb/238U age of 417 Ma (Black et al., 2003), were cast in epoxy resin discs and were polished. All grains were photographed in both transmitted and reflected light and were then imaged using cathodoluminescence (CL) to reveal the internal structure and to identify the preferred locations for SIMS analysis. The U–Pb dating information is given in Supplementary Table 7.

3.1 矿物电子探针显微分析
采用电子探针显微分析（Electron Probe Microanalysis）对表壳岩及含石榴子花岗岩的矿物成分进行分析，实验地点位于中国北京大学教育部造山与地壳演化重点实验室，测试条件为：加速电压5 kV，束流1×10^–8 A，束斑直径1 μm。校准过程采用了53种成分明确的天然矿物标准样品（SPI Supplies，美国宾夕法尼亚州西切斯特）。分析结果详见补充表1至表5。
3.2 全岩地球化学
主量元素组成测试采用Axios型X射线荧光光谱仪（X-ray fluorescence, XRF），实验地点为中国国家地质分析测试研究中心。微量元素分析使用Elan 9000型电感耦合等离子体质谱仪（inductively coupled plasma mass spectrometer, ICP–MS；珀金埃尔默，美国马萨诸塞州沃尔瑟姆），分析精度优于10%。主量与微量元素组成及各元素的分析精度详见补充表6。
3.3 锆石U–Pb定年
通过标准粉碎与分选技术获取锆石晶体，随后采用中国地质科学院（Chinese Academy of Geological Sciences, CAGS）北京SIMS中心的SIMS II型离子探针开展U–Pb定年实验。将手选得到的锆石晶体与TEMORA标准样（其常规测定的206Pb/238U年龄为417 Ma，Black等，2003）一同封装于环氧树脂靶盘中并进行抛光处理。所有锆石颗粒均经透射光与反射光拍照，并通过阴极发光（cathodoluminescence, CL）成像以揭示其内部结构，确定SIMS分析的优选点位。锆石U–Pb定年相关信息详见补充表7。