碎屑锆石U-Pb年代学数据获取、分析与比较

张凌, 王平, 陈玺赟, 殷勇

Review in Detrital Zircon U-Pb Geochronology: Data Acquisition, Analysis and Comparison

Ling Zhang, Ping Wang, Xiyun Chen, Yong Yin

图2 河流沉积物样品采用颗粒自然沉降（靶1）与手工随机挑选（靶2）制靶结果对比 粒径由ImageJ图像分析并计算等效粒径得到，直方图分别代表了2个靶的碎屑锆石U-Pb年龄的分布，在靶1中获得了5颗小于50 Ma的锆石年龄组分且粒径较小（54~75 μm），而在靶2中仅获得了1颗小于50 Ma的锆石年龄且粒径较大（约为90 μm）

Fig.2 River sediment samples were compared by natural particle sedimentation (target 1) and by manual random selection (target 2) The particle size was obtained by analyzing the ImageJ image and calculating the equivalent particle size. The histogram represents the distribution of U-Pb ages of detrital zircons of the two targets. Five zircons of <50 Ma were obtained from target 1 with small size (54~75 μm), while only one zircon of <50 Ma was obtained from target 2 with large size (about 90 μm)