| 内蒙古东乌珠穆沁旗查干哈达音亨嘎高温型强过铝质花岗岩年代学、地球化学特征及其地质意义 |
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| 引用本文： | 贺瑾瑞,郭丽,郝春燕,徐吉祥,邹滔,宋庆伟,冉淑红,程素珍,张翊超,何付兵.内蒙古东乌珠穆沁旗查干哈达音亨嘎高温型强过铝质花岗岩年代学、地球化学特征及其地质意义[J].地质通报,2018,37(6):1050-1060. |
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| 作者姓名： | 贺瑾瑞 郭丽 郝春燕 徐吉祥 邹滔 宋庆伟 冉淑红 程素珍 张翊超 何付兵 |
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| 作者单位： | 北京市地质研究所;中煤集团山西华昱能源有限公司;北京市地质调查研究院;北京矿产地质研究院;中国地震局地质研究所 |
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| 基金项目： | 中国地质调查局项目《内蒙古1∶5万巴彦塔拉等四幅区域地质调查》（编号：基［2010］矿评01-09-04） |
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| 摘 要： | 内蒙古东乌珠穆沁旗查干哈达音亨嘎强过铝质岩体位于华北板块与西伯利亚板块之间的中亚-蒙古造山带中东段的兴蒙褶皱带,主要岩石类型为含石榴子石二云母二长花岗岩。基于锆石U-Pb同位素定年、地球化学分析和构造环境判别,结合区域对比,认为查干哈达音亨嘎岩体源区可能与变质泥岩部分熔融有关,晚古生代,强过铝质花岗岩形成之前,二连—东乌旗一带已经发生了碰撞造山作用,之后为后碰撞-造山后的伸展扩张时期。经研究确定,查干哈达音亨嘎岩体为鲜有报道的石炭纪—早二叠世具有典型后碰撞特征的高温型强过铝质S型花岗岩类。
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| 关 键 词： | S型花岗岩 高温型 锆石U-Pb年龄 后碰撞 内蒙古东乌珠穆沁旗 |
| 收稿时间： | 2017/10/19 0:00:00 |
| 修稿时间： | 2017/12/12 0:00:00 |
Geochronology and geochem-ical characteristics of the Chaganhadayinhengga strongly peraluminous granites in East Ujimqin Banner of Inner Mongolia and their geological significance |
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| HE Jinrui,GUO Li,HAO Chunyan,XU Jixiang,ZOU Tao,SONG Qingwei,RAN Shuhong,CHENG Suzhen,ZHANG Yichao and HE Fubing.Geochronology and geochem-ical characteristics of the Chaganhadayinhengga strongly peraluminous granites in East Ujimqin Banner of Inner Mongolia and their geological significance[J].Geologcal Bulletin OF China,2018,37(6):1050-1060. |
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| Authors: | HE Jinrui GUO Li HAO Chunyan XU Jixiang ZOU Tao SONG Qingwei RAN Shuhong CHENG Suzhen ZHANG Yichao and HE Fubing |
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| Institution: | Beijing Institute of Geology, Beijing 100120, China,Chinacoal Group Shanxi Huaju Energy Co., LTD, Shuozhou 036900, Shanxi, China,Beijing Institute of Geology, Beijing 100120, China,Beijing Institute of Geological Survey, Beijing 100195, China,Beijing Institute of Geology for Mineral Resources, Beijing 100012, China,Beijing Institute of Geology, Beijing 100120, China,Beijing Institute of Geology, Beijing 100120, China,Beijing Institute of Geology, Beijing 100120, China,Beijing Institute of Geology, Beijing 100120, China and Beijing Institute of Geological Survey, Beijing 100195, China;Institute of Geology, China Earthquake Administration, Beijing 100029, China |
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| Abstract: | The Chaganhadayinhengga strongly peraluminous granites in East Ujimqin Banner of Inner Mongolia are located in the Xing-Meng fold belt along the central and eastern section of Central Asia-Mongolia orogenic belt between the North China plate and the Siberia plate. The main rock type is garnet-bearing two-mica monzonitic granite. Based on zircon U-Pb isotopic dating, geochemical analysis and tectonic environment discrimination in combination with regional correlation, the authors have reached the following conclusions:The source area of the Chaganhadayinhengga rock mass might have been related to the partial melting of meta-morphosed mudstone; during Late Paleozoic period, before the formation of strong peraluminous granite, even Erlian-East Ujimqin Banner area underwent collisional orogeny, and then after collision, the evolution entered into the post orogenic extension-expan-sionl period. Studies show that the Chaganhadayinhengga rock mass belongs to the Carboniferous-Early Permian typical post colli-sional high temperature type peraluminous granites rarely reported by previous researchers. |
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| Keywords: | S type granitoids high temperature type zircon U-Pb age post collisional East Ujimqin Banner |
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