首页 | 本学科首页   官方微博 | 高级检索  
     检索      

北淮阳花岗岩-正长岩带地球化学特征及其大地构造意义
引用本文:周泰禧,陈江峰,张巽,李学明.北淮阳花岗岩-正长岩带地球化学特征及其大地构造意义[J].地质论评,1995,41(2):44-151.
作者姓名:周泰禧  陈江峰  张巽  李学明
作者单位:中国科学技术大学 合肥 (周泰禧,陈江峰,张巽),中国科学技术大学 合肥(李学明)
摘    要:采用岩石化学、稀土元素和锶、钕、铅同位素方法对安徽省西部沿金寨、霍山、舒城一线出露的花岗岩-正长岩类岩石的研究表明,古老地壳岩石在它们的形成过程中起了重要作用,而且它们的同位素组成特征与华北板块基底岩石相近。因此,该岩带出露区的大地构造位置应归属华北板块。岩体的地质产状、岩石化学特征和侵位时代表明,它们是白垩纪时拉张环境下的产物。

关 键 词:花岗岩-正长岩类  同位素方法  大地构造位置  安徽西部

GEOCHEMISTRY OF THE NORTH HUAIYANG GRANITE-SYENITE ZONE AND ITS TECTONIC IMPLICATION
Zhou Taixi,Chen Jiangfeng,Zhang Xun and Li Xueming.GEOCHEMISTRY OF THE NORTH HUAIYANG GRANITE-SYENITE ZONE AND ITS TECTONIC IMPLICATION[J].Geological Review,1995,41(2):44-151.
Authors:Zhou Taixi  Chen Jiangfeng  Zhang Xun and Li Xueming
Abstract:Granites-syenites occurring in Jinzhai, Huoshan and Shucheng, western Anhui Province, have been studied by means of major element, REE and Sr, Nd and Pb isotopic methods. The results show that old crustal materials played an important role in their formation of these rocks are similar to that of the basement rocks of the North China plate. Therefore, the intrusions are located in the North China plate tectonically. Modes of occurrence, petrochemical features and emplacement ages of the intrusions indicate that they were formed in an extensional environment during the Cretaceous.
Keywords:granites-syenites  isotopic technique  tectonic environment  western Anhui Province  
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《地质论评》浏览原始摘要信息
点击此处可从《地质论评》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号