U-Pb SHRIMP zircon isotopic data for ages used on the Poncha Pass map

U-Pb isotopic data from zircon measured using the SHRIMP-RG ion microprobe at Stanford University, CA. These data are used to calculate absolute ages of the samples...由美国加利福尼亚州斯坦福大学的SHRIMP-RG离子微探针（SHRIMP-RG ion microprobe）对锆石进行测试得到的铀-铅（U-Pb）同位素数据。此类数据可用于计算样品的绝对年龄……