测点号 | 含量(ppm) | 比值 | 年龄(Ma) | |||||||||||
Pb | Th | U | Th/U | 207Pb/ 235U | 206Pb/ 238U | 208Pb/ 232Th | 238U/ 232Th | 207Pb/ 235U | 207Pb/ 235U | 206Pb/ 238U | 206Pb/ 238U | 208Pb/ 232Th | 208Pb/ 232Th | |
Age | 1sigma | Age | 1sigma | Age | 1sigma | |||||||||
ZSH-1 | 14.98 | 177.9 | 289.18 | 0.61 | 0.276 ± 0.026 | 0.036 ± 0.001 | 0.011 ± 0.001 | 1.632 | 248 | 21 | 230 | 8 | 226 | 11 |
ZSH-2 | 59.47 | 352.04 | 596.68 | 0.59 | 0.773 ± 0.031 | 0.071 ± 0.002 | 0.018 ± 0.001 | 1.763 | 582 | 17 | 444 | 14 | 353 | 15 |