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中国东南沿海平潭-东山带内广泛出露片麻状花岗岩,其Rb-Sr的全岩和矿物等时线年龄分别为(165±13)和120—90 Ma.我们用电子显微探针对福建石狮市南(样品92092201-2和92092202A)和东(91100203A)的片麻状花岗岩中的独居石、磷钇矿和锆石进行CHIME方法(Th-U-全Ph等时线定年,得到的结果见表1和图1.CHIME定年的年
The widely-exposed gneissic granites in the Pingtan-Dongshan belt along the southeastern China have total isochron ages of (165 ± 13) and 120-90 Ma for Rb-Sr, respectively. We used electron microscopy The CHIME method (Th-U-full Ph isochronism dating) for monazite, xenotime and zircon in gneissic granites from Shishi City, Fujian Province (samples 92092201-2 and 92092202A) and east (91100203A) The results are shown in Table 1 and Figure 1. The year of CHIME dating