| 鲁西孟家屯一种细粒斜长角闪岩的锆石SHRIMP年代学 |
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| 引用本文：杜利林,庄育勋,杨崇辉,万渝生,王新社.2005.鲁西孟家屯一种细粒斜长角闪岩的锆石SHRIMP年代学[J].地球学报,26(5):429-434. |
| DOI：10.3975/cagsb.2005.05.06 |
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| 基金项目:原地质矿产部跨世纪人才基金项目;同位素开放实验室基金项目 |
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| 中文摘要:在对鲁西孟家屯地区一种细粒斜长角闪岩变质侵入体的矿物岩相学和锆石微区特征研究的基础上,通过锆石离子探针测定获得了2604±11Ma的变质作用年龄。结合孟家屯岩组的年龄资料和鲁西地区的岩浆活动时代特征,认为鲁西地区在2.65~2.6Ga时期是一个强烈的构造活动时期,与同时期华北地台其他地区的构造活动有很大的差异,具有其独特的地质演化历史。 |
| 中文关键词:鲁西 细粒斜长角闪岩 年代学 华北地台 |
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| SHRIMP U-Pb Zircon Chronology of Fine-grained Amphibolite in the Mengjiatun Area, Western Shandong |
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| Abstract:Based on studying mineral lithofaces, zircon characteristics and chronology, the authors obtained zircon SHRIMP metamorphic age of 2 604±11 Ma for fine-grained amphbolite from Mengjiatun area of western Shandong. According to metamorphic ages of Mengjiatun Formation and other magmatic ages of western Shandong, it is concluded that intense geological movement took place from 2 650 Ma to 2 600 Ma, which is quite different from other regions in the North China platform. Therefore western Shandong has its unique geological evolution history in Early Precambrian. |
| keywords:western Shandong Fine-grained amphbolite chronology North China platform |
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