Research Article
Zircon U–Pb Dating and Lu-Hf Isotope of the Retrograded Eclogite from Chicheng, Northern Hebei Province, China
Table 3
Isotopic features of zircon Lu-Hf from the retrograded eclogite (sample 160601 and 160602).
| Spot | 206Pb/238U age (Ma) | 176Yb/177Hf | ±(2δ) | 176Lu/177Hf | ±(2δ) | 176Hf/177Hf | ±(2δ) | 178Hf/177Hf | ±(2δ) | εHf (t) | TDM (Ma) |
| Sample 160601 | 1.1 | 348.6 | 0.000269 | 0.000007 | 0.000009 | 0.000000 | 0.282893 | 0.000014 | 1.467956 | 0.000052 | 12.0 | 495.8 | 2.1 | 363.7 | 0.000164 | 0.000004 | 0.000004 | 0.000000 | 0.283015 | 0.000008 | 1.467831 | 0.000033 | 16.3 | 326.7 | 4.1 | 350.7 | 0.000625 | 0.000011 | 0.000013 | 0.000000 | 0.282726 | 0.000009 | 1.468006 | 0.000031 | 6.0 | 725.8 | 5.1 | 356.4 | 0.000306 | 0.000004 | 0.000005 | 0.000000 | 0.282868 | 0.000009 | 1.467985 | 0.000028 | 11.1 | 529.7 | 6.1 | 342.1 | 0.000195 | 0.000004 | 0.000004 | 0.000000 | 0.282892 | 0.000007 | 1.468000 | 0.000026 | 11.9 | 497.8 | 7.1 | 352.0 | 0.000378 | 0.000008 | 0.000006 | 0.000000 | 0.282869 | 0.000008 | 1.468050 | 0.000027 | 11.1 | 529.0 | 8.1 | 345.0 | 0.000678 | 0.000004 | 0.000011 | 0.000000 | 0.282815 | 0.000008 | 1.468060 | 0.000030 | 9.2 | 603.0 | 9.1 | 346.2 | 0.000192 | 0.000003 | 0.000004 | 0.000000 | 0.282908 | 0.000007 | 1.468048 | 0.000027 | 12.5 | 475.2 | 10.1 | 356.5 | 0.000163 | 0.000003 | 0.000002 | 0.000000 | 0.283025 | 0.000008 | 1.468040 | 0.000028 | 16.6 | 312.7 | 11.1 | 339.4 | 0.000437 | 0.000003 | 0.000008 | 0.000000 | 0.282961 | 0.000007 | 1.468070 | 0.000030 | 14.4 | 402.0 | 13.1 | 341.2 | 0.000632 | 0.000004 | 0.000009 | 0.000000 | 0.282997 | 0.000008 | 1.467967 | 0.000026 | 15.6 | 351.7 | 14.1 | 354.4 | 0.000129 | 0.000003 | 0.000003 | 0.000000 | 0.282904 | 0.000006 | 1.467954 | 0.000028 | 12.3 | 480.8 | 15.1 | 362.6 | 0.000326 | 0.000003 | 0.000005 | 0.000000 | 0.282962 | 0.000008 | 1.467977 | 0.000029 | 14.4 | 399.7 | 16.1 | 348.9 | 0.000199 | 0.000003 | 0.000003 | 0.000000 | 0.282952 | 0.000008 | 1.468013 | 0.000024 | 14.0 | 414.0 | 17.1 | 345.1 | 0.000173 | 0.000003 | 0.000003 | 0.000000 | 0.282986 | 0.000008 | 1.468018 | 0.000024 | 15.2 | 367.3 |
| Sample 160602 | 2.1 | 340.6 | 0.007992 | 0.000018 | 0.000279 | 0.000001 | 0.283009 | 0.000013 | 1.468003 | 0.000038 | 15.9 | 337.3 | 3.1 | 325.1 | 0.015006 | 0.000064 | 0.000559 | 0.000005 | 0.283069 | 0.000012 | 1.468001 | 0.000045 | 18.0 | 255.4 | 4.1 | 347.4 | 0.000633 | 0.000004 | 0.000012 | 0.000000 | 0.282946 | 0.000009 | 1.467974 | 0.000030 | 13.7 | 422.2 | 5.1 | 333.1 | 0.012529 | 0.000078 | 0.000313 | 0.000003 | 0.283008 | 0.000012 | 1.467899 | 0.000052 | 15.8 | 340.0 | 6.1 | 352.0 | 0.011790 | 0.000083 | 0.000438 | 0.000004 | 0.282982 | 0.000010 | 1.467996 | 0.000036 | 14.9 | 377.1 | 7.1 | 358.3 | 0.000262 | 0.000004 | 0.000005 | 0.000000 | 0.282921 | 0.000008 | 1.468039 | 0.000025 | 12.8 | 457.6 | 8.1 | 350.9 | 0.001480 | 0.000055 | 0.000043 | 0.000001 | 0.282948 | 0.000009 | 1.468046 | 0.000033 | 13.8 | 420.6 | 9.1 | 338.4 | 0.001213 | 0.000023 | 0.000027 | 0.000000 | 0.282974 | 0.000010 | 1.467941 | 0.000034 | 14.7 | 383.7 | 10.1 | 333.9 | 0.001200 | 0.000008 | 0.000024 | 0.000000 | 0.282972 | 0.000010 | 1.468016 | 0.000030 | 14.6 | 387.0 |
|
|