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鲁西孟家屯一种细粒斜长角闪岩的锆石SHRIMP年代学
引用本文:杜利林,庄育勋,杨崇辉,万渝生,王新社.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,2005,26(5):429-434.
作者姓名:杜利林  庄育勋  杨崇辉  万渝生  王新社
作者单位:中国科学院地质与地球物理研究所,北京,100029,中国地质科学院地质研究所,北京,100037;中国地质调查局,北京,100011;中国地质科学院地质研究所,北京,100037;中国地质科学院地质研究所,北京,100037;北京离子探针中心,北京,100037;中国地质科学院地质研究所,北京,100037
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
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。

关 键 词:鲁西  细粒斜长角闪岩  年代学  华北地台

SHRIMP U-Pb Zircon Chronology of Fine-grained Amphibolite in the Mengjiatun Area, Western Shandong
DU Li-lin,ZHUANG Yu-xun,YANG Chong-hui,WAN Yu-sheng and WANG Xin-she.SHRIMP U-Pb Zircon Chronology of Fine-grained Amphibolite in the Mengjiatun Area, Western Shandong[J].Acta Geoscientia Sinica,2005,26(5):429-434.
Authors:DU Li-lin  ZHUANG Yu-xun  YANG Chong-hui  WAN Yu-sheng and WANG Xin-she
Institution:Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029; Institute of Geology, CAGS, Beijing, 100037;China Geological Survey, Beijing, 100011;Institute of Geology, CAGS, Beijing, 100037;Institute of Geology, CAGS, Beijing, 100037; Beijing SHRIMP Center, Institute of Geology, CAGS, Beijing, 100037;Institute of Geology, CAGS, Beijing, 100037
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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