| 秦岭富水杂岩的变辉长岩中斜锆石与锆石U-Pb同位素年龄的差异及其地质意义 |
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| 关键词:Fushui complex in the Qinling Mountains gabbro baddeleyite zircon U-Pb isotope age |
| 基金项目:本文由国家自然科学基金重点项目（编号:40032010-c)和国家自然科学基金项目（批准号:40373032)资助。 |
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| Age Difference between Baddeleyite and Zircon from Metagabbro in Fushui Complex of the Qinling Mountains and Its Geological Implications |
| There are baddeleyites and zircons with high U and Pb in metagabbro from Fushui complex in the Qinling Mountains. They are very ideal minerals for U-Pb isotope dating. The baddeleyites and zircons were dated by SHRIMP and TIMS U-Pb dating methods. Age data of 501.4±1.2 Ma for baddeleyites and 480.0±3.4 Ma for zircons were obtained. The age difference between baddeleyite and zircon is about 20 Ma. The baddeyite-zircon relationship in the metagabbro and the zircon genesis were studied. The Baddeleyite age of 501.4±1.2 Ma is interpreted as the formation age of the metagabbro in Fushui Complex of the Qinling Mountains. As the genesis of the zircon is very complex, the reasonable interpretation for the zircon age of 480.0±3.4 Ma requires further studies. |
| LI Huimin,XIANG Zhenqun,LI Huaikun,LU Songnian,Chen Zhihong,Zhou Hongying,Song Biao.2005.Age Difference between Baddeleyite and Zircon from Metagabbro in Fushui Complex of the Qinling Mountains and Its Geological Implications[J].Acta Geoscientica Sinica,26(z1):57-60. |
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