华北北缘云蒙山和房山岩体主微量元素、锆石锆石微量元素数据集 (2020)

主微量元素数据在中国科学院广州地球化学研究所同位素地球化学国家重点实验室由ICP-MS完成测定。锆石微量均在中国科学院广州地球化学研究所中国科学院矿物学与成矿学重点实验室由LA-ICP-MS完成测定。同批次测定的国际标样和参考值在误差范围内一致，全流程空白低，数据质量准确可靠。云蒙山和房山岩体的二氧化硅含量显示较宽的范围52%至75%，从中性岩到花岗岩。并且显示了较高的Fe3+/ΣFe比值，分布在0.3至0.6之间。基于原位锆石微量元素分析，计算得出云蒙山和房山锆石Ce4+/Ce3+ = (100 - 1000)，(Eu/Eu*)N = (0.5 - 0.1)，与智利和德兴斑岩铜矿类似，显示了较高的氧逸度。而来自利国和房山岩体的2.5 Ga继承锆石Ce4+/Ce3+ = (10 - 200)，(Eu/Eu*)N = (0.1 - 0.4)，显示了较低的氧逸度。通过搜集数据发现，高氧逸度的岩体广泛分布在华北。这些岩浆来源于下地壳熔融和地幔楔的熔融相混合，而高氧逸度特征主要继承于氧化的地幔楔，主要是古太平洋板块俯冲过程中大量氧化性流体、物质带入地幔楔所造成。

Major and trace element data were determined by ICP-MS at the State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. Zircon trace element analyses were conducted via LA-ICP-MS at the Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. International standard reference materials analyzed in the same batch yielded results consistent with reference values within error margins, with low procedural blanks, ensuring accurate and reliable data quality. The SiO₂ contents of the Yunmengshan and Fangshan plutons span a wide range from 52% to 75%, corresponding to lithologies from intermediate rocks to granites. These samples also exhibit high Fe³+/ΣFe ratios, ranging between 0.3 and 0.6. Based on in-situ zircon trace element analyses, the calculated Ce⁴+/Ce³+ ratios of zircons from the Yunmengshan and Fangshan plutons are (100–1000), and chondrite-normalized (Eu/Eu*)N values are (0.5–0.1), which are similar to those of porphyry copper deposits in Chile and Dexing, indicating high oxygen fugacity. In contrast, the 2.5 Ga inherited zircons from the Liguo and Fangshan plutons have Ce⁴+/Ce³+ ratios of (10–200) and (Eu/Eu*)N values of (0.1–0.4), suggesting low oxygen fugacity. Data compilation reveals that high-oxygen-fugacity plutons are widely distributed in the North China Craton. These magmas were derived from the mixing of melts from the lower crust and mantle wedge, while the high oxygen fugacity signature was primarily inherited from the oxidized mantle wedge, which was mainly caused by the influx of large quantities of oxidizing fluids and materials into the mantle wedge during the subduction of the Paleo-Pacific Plate.