SHRIMP U-Pb Zircon Chronology of Fine-grained Amphibolite in the Mengjiatun Area, Western Shandong
SHRIMP U-Pb Zircon Chronology of Fine-grained Amphibolite in the Mengjiatun Area, Western Shandong
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发表时间：
2005
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通讯作者：
Du Lilin;Zhuang Yu-xun;Yang Chong-hui;Wang Yusheng;Wang Xinshe
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作者：
Du Lilin;Zhuang Yu-xun;Yang Chong-hui;Wang Yusheng;Wang Xinshe
通过矿物岩相、锆石特征和年代学研究，获得鲁西孟家屯地区细粒斜长角闪岩的锆石SHRIMP变质年龄为2604 ±11 Ma。根据鲁西地区孟家屯组变质年龄和其他岩浆年龄，认为鲁西地区在2650 ~ 2600 Ma发生了强烈的地质运动，这与华北地台其他地区的地质运动有很大不同。因此，鲁西在早前寒武纪有其独特的地质演化历史。
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.