佛坪穹窿混合岩和花岗岩锆石年龄和地球化学组成数据

LA-ICP-MS锆石定年分析、XRF和 ICP-MS方法的元素地球化学分析和TIMS方法获得的Sr-Nd同位素组成显示：南秦岭佛坪穹窿的混合岩类记录了多期部分熔融事件。混合岩的原岩可以分为两种，第一种混合岩记录了晚三叠世的年代学特征（平均年龄为214-211Ma），第二种混合岩同时记录新元古代以及晚三叠世的年龄特征。混合岩的矿物组合特征显示含有大量的富铝矿物，锆石U-Pb年代学记录复杂（2907-187Ma），而混合岩锆石的核部含有一些古老锆石记录，包括一些太古代以及新元古代的年代学记录，边部的年代学记录为晚三叠至早侏罗世（224-187Ma）。五龙岩体花岗岩类的锆石U-Pb年代学特征指示其结晶年龄为219-192Ma，且花岗岩类地球化学特征差异较大，其中低Mg#花岗岩类（Mg#＜50）按照地球化学特征大致可以分成两组，第一组具有高Sr/Y比值特征(Sr/Y＞40)，第二组花岗岩类具有正常的Sr/Y比值特征（Sr/Y＜40）。数据源自科研项目“国家重点研发计划“燕山期重大地质事件的深部过程与资源效应”（2016YFC0600404)。

LA-ICP-MS zircon dating, elemental geochemical analysis via XRF and ICP-MS, and Sr-Nd isotopic compositions obtained by TIMS demonstrate that the migmatites in the Fuping Dome of the South Qinling Mountains record multiple episodes of partial melting events. The protoliths of these migmatites can be divided into two types: the first type records Late Triassic chronological features with a mean age of 214–211 Ma, while the second type records both Neoproterozoic and Late Triassic age characteristics. The mineral assemblages of the migmatites contain abundant aluminous minerals, and their zircon U-Pb chronology yields complex age ranges (2907–187 Ma). The cores of the migmatitic zircons hold ancient zircon records, including Archaean and Neoproterozoic chronological data, whereas the rims display Late Triassic to Early Jurassic age records (224–187 Ma). The zircon U-Pb chronology of the granitoids in the Wulong Batholith indicates their crystallization ages are 219–192 Ma, and the geochemical characteristics of these granitoids vary significantly. Among them, low-Mg# granitoids (Mg# < 50) can be roughly divided into two groups based on geochemical traits: the first group has high Sr/Y ratios (Sr/Y > 40), and the second group exhibits normal Sr/Y ratios (Sr/Y < 40). The data are derived from the National Key Research and Development Program of China "Deep Processes and Resource Effects of Major Yanshanian Geological Events" (Grant No. 2016YFC0600404).