| 云南马头湾透辉石花岗斑岩锆石SHRIMPU-Pb年龄研究 |
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| 引用本文：刘红英,夏斌,张玉泉.2003.云南马头湾透辉石花岗斑岩锆石SHRIMPU-Pb年龄研究[J].地球学报,24(6):552-554. |
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| 基金项目:中国科学院知识创新工程重要方向性项目(KZCX2SW117、KZCX2101) |
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| 中文摘要:位于云南省西部鹤庆县北衙Pb、Au等矿区西边的马头湾透辉石花岗斑岩锆石SHRIMPU—Pb年龄为34Ma，反映该岩体的岩浆在上侵定位时的结晶时间或成岩时间，相当于渐新世，属于喜马拉雅期；成岩时间还表明：控岩的哀牢山-金沙江走滑拉分的深断裂带受控于印度与欧亚两大板块的碰撞(45Ma左右)，其年龄基本相当或略晚于前者，表明其成因与两大板块的碰撞有内在联系。 |
| 中文关键词:锆石 SHRIMP U-Pb年龄 透辉石花岗斑岩 马头湾 云南省西部 |
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| The SHRIMP U-Pb Age of Matouwan Diopside Granite Porphyry in Yunnan Province |
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| Abstract:The SHRIMP technique was applied to determining U-Pb age of the Matouwan diopside granite porphyry in western Yunnan Province. The results show that the Matouwan diopside granite porphyry was intruded at 34 Ma,which should be Oligocene in time and belong to Himalayan period. The age indicates that the Ailaoshan-Jinshajiang deep fracture zone is controlled by the collision of the Indian plate with the Eurasian continental plate at about 40 Ma.The formation of Matouwan diopside granite porphyry must have had inherent connection with the collision of the two plates. |
| keywords:zircon SHRIMP diopside granite porphyry Matouwan western Yunnan Province |
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