| 华北克拉通中北部古元古代碰撞造山时限:来自强过铝花岗岩和韧性剪切时代的制约 |
| |
| 引用本文： | 张华锋,罗志波,周志广,柳长峰.华北克拉通中北部古元古代碰撞造山时限:来自强过铝花岗岩和韧性剪切时代的制约[J].矿物岩石,2009,29(1). |
| |
| 作者姓名： | 张华锋 罗志波 周志广 柳长峰 |
| |
| 作者单位： | 中国地质大学地质过程与矿产资源国家重点实验室,北京,100083 |
| |
| 基金项目： | 国家自然科学基金，国土资源部地调局华北地区基础地质调查及数据更新项目 |
| |
| 摘 要： | 运用将古元古代强过铝花岗岩和区域韧性剪切作用时代相结合的方法,探讨华北克拉通中北部古元古代碰撞时限,通过定向显微构造观察和角闪石矿物化学研究表明.区域拉伸线理形成于中压麻粒岩相条件;韧性剪切作用方向与拉伸线理走向一致,大量显微观察表明韧性剪切发生在中压麻粒岩相退变过程;根据已有的强过铝花岗岩岩石化学和时代以及区域韧性剪切时代等资料,结合麻粒岩变质PT轨迹和同位素年代学数据,提出高压麻粒岩的峰期时限应在1 950 Ma～1 900 Ma,而1 900 Ma～1 800 Ma为碰撞后抬升过程中的中压麻粒岩相和角闪岩相退变作用.
|
| 关 键 词： | 华北克拉通 桑干地区 古元古代 高压麻粒岩 碰撞造山峰期时限 |
PALAEOPROTEROZOIC COLLISIONAL TIME IN THE SANGGAN AREA OF THE NORTH CHINA CRATON:CONSTRAINTS FROM AGE OF REGIONAL DUCTILE SHEARING AND POST-COLLISIONAL SUPER PERALUMINOUS GRANITES |
| |
| ZHANG Hua-feng,LUO Zhi-bo,ZHOU Zhi-guang,LIU Chang-feng.PALAEOPROTEROZOIC COLLISIONAL TIME IN THE SANGGAN AREA OF THE NORTH CHINA CRATON:CONSTRAINTS FROM AGE OF REGIONAL DUCTILE SHEARING AND POST-COLLISIONAL SUPER PERALUMINOUS GRANITES[J].Journal of Mineralogy and Petrology,2009,29(1). |
| |
| Authors: | ZHANG Hua-feng LUO Zhi-bo ZHOU Zhi-guang LIU Chang-feng |
| |
| Institution: | ZHANG Hua-feng,LUO Zhi-bo,ZHOU Zhi-guang,LIU Chang-fengState Key Laboratory of Geological Processes , Mineral Resources,China University of Geosciences,Beijing 100083,China |
| |
| Abstract: | The timing of Paleoproterozoic collision in the Sanggan area of the North China Craton was discussed on the basis of study of super peraluminous granite and regional ductile shearing.The NEE trend regional stretched lineation and ductile shear zones were formed during granulite retrogression,evidenced by mineral assemblage,amphibole composition and deformation features of the high-pressure granulites.Ductile shearing occurred in super peraluminous granites with formation of typical minerals of garnet,cordie... |
| |
| Keywords: | North China Craton Sanggan area Palaeoproterozoic high-pressure granulite peak metamorphic age |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
