| 苏鲁地体胡家林和梭罗树三叠纪变质超基性岩U-Pb、Lu-Hf和O同位素地球化学研究 |
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| 关键词:ultramafic rocks zircon U-Pb Lu-Hf O isotope |
| 基金项目:本文由国家自然科学基金项目（编号:40334036)资助。 |
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| Zircon U-Pb Age, Lu-Hf and O Isotope Geochemistry of Triassic Meta-Ultramafic Rocks at Hujialin and Suoluoshu in the Sulu Orogenic Belt |
| Zircon U-Pb dating, Lu-Hf and O isotope analyses were carried out for meta-ultramafic rocks at Hujialin and Suoluoshu in the Sulu orogenic belt. The results indicate that despite significant difference in their δ18O values, the ultramafic rocks experienced Triassic metamorphism during the subduction of the South China plate beneath the North China block. Zircon U-Pb and Lu-Hf isotope systems were reset by crustal contamination during the Triassic subduction, with the fluid activity at the onset of ultrahigh pressure metamorphism and decompressure exhumation from ultrahigh pressure to high pressure phases. |
| LONG Bing,MENG Yongfei,CHEN Bin,WU Yuanbao.2005.Zircon U-Pb Age, Lu-Hf and O Isotope Geochemistry of Triassic Meta-Ultramafic Rocks at Hujialin and Suoluoshu in the Sulu Orogenic Belt[J].Acta Geoscientica Sinica,26(z1):67-69. |
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