| 陕西省洛南县莲花沟岩体LA-ICP MS锆石U-Pb年龄及地质意义 |
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| 关键词:intrusive rocks U-Pb age geological implications Luonan Lianhuagou |
| 基金项目:“十一五”国家科技支撑计划重大项目(编号:2006BAB01A01); 国家自然科学基金项目(编号:40772062); 地质大调查项目(编号:1212010813046) |
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| U-Pb Age of the Lianhuagou Intrusive Rocks in Luonan County,Shaanxi Province and Its Geological Implications |
| Lying in the area from Jinduicheng of Shaanxi Province to Nannihu-Sandaozhuang-Shangfanggou in Luanchuan County and Leimengou in Songxian County of Henan Province,the East Qinling molybdenum belt in the south of the North China Plate possesses such large-superlarge Mo deposits as Nannihu,Sandaozhuang and Shangfanggou.These ore deposits are related to the Yanshanian intermediate-acid intrusive rocks,with the rock-forming and ore-forming ages concentrated on 110～160 Ma.The Lianhuagou intrusive rocks are located in the East Qinling belt,and their magmatic bodies and petrochemical characteristics are very similar to each other.This paper emphatically studied regional geological settings,and obtained a U-Pb age of(147.7±2.0)Ma by means of LA-ICP MS for Lianhuagou intrusive rocks in Luonan County.This age falls into the Mo-bearing range of the East Qinling belt,thus having great geological implications for further regional prospecting. |
| ZHANG Zhao-wei,LI Wen-yuan,ZHAO Dong-hong,GAO Yong-bao,XIE Xie,ZHANG Hai-song,PENG Su-xia,LI Hang.2008.U-Pb Age of the Lianhuagou Intrusive Rocks in Luonan County,Shaanxi Province and Its Geological Implications[J].Acta Geoscientica Sinica,29(6):811-816. |
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