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| 太行山北段王安镇杂岩体中酸性岩锆石SHRIMP U-Pb定年、Hf同位素组成及其地质意义 | |
| 引用本文： | 申志超,侯增谦,于枫,陈志宽,李秋耘,马国玺,葛峰,王志敏.太行山北段王安镇杂岩体中酸性岩锆石SHRIMP U-Pb定年、Hf同位素组成及其地质意义[J].岩石学报,2015,31(5):1409-1420. |
| 作者姓名： | 申志超 侯增谦 于枫 陈志宽 李秋耘 马国玺 葛峰 王志敏 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京100037;中国地质大学,北京100083 2. 中国地质科学院地质研究所,北京,100037 3. 中国地质大学,北京,100083 4. 河北省保定地质工程勘察院,保定,071051 |
| 基金项目： | 本文受国家重点基础发展研究计划973项目(2011CB403100)资助. |
| 摘 要： | 太行山北段王安镇杂岩体花岗闪长岩、二长花岗岩、髫髻山组火山岩-安山岩精细SHRIMP U-Pb定年和Hf同位素地球化学研究表明:花岗闪长岩体形成于135.7±1.3Ma,二长花岗岩体形成于133.7±1.1Ma,安山岩形成于138.89±0.9Ma,与杂岩体内基性侵入岩(138Ma)具有相似的形成年龄。花岗闪长岩的锆石εHf(t)值为-21.81~-16.09,相应tDMC为2.2~2.6Ga;二长花岗εHf(t)值为-20.50~-16.31,相应tDMC为2.2~2.5Ga,与杂岩体内基性岩体具有极为相似的Hf同位素特征εHf(t)=-22.8~-15.3。杂岩体中酸性岩类岩石成因可解释为:富集地幔(EMI)部分熔融形成的玄武质岩浆遭受一定程度的地壳混染以及之后的分离结晶作用对形成王安镇杂岩体中酸性岩类发挥着关键作用。与华北克拉通内部其他地区相同,晚侏罗-早白垩世北太行地区处于软流圈上涌的岩石圈伸展构造背景。 |
| 关 键 词： | 王安镇杂岩体 SHRIMP U-Pb定年 Hf同位素 太行山北段 |
| 收稿时间： | 2014/12/10 0:00:00 |
| 修稿时间： | 2015/2/15 0:00:00 |
SHRIMP zircon U-Pb ages and Hf isotopes of the intermediate-acidic rocks of Wanganzhen complex in northern part of Taihang Mountains and their geological implications |
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| SHEN ZhiChao,HOU ZengQian,YU Feng,CHEN ZhiKuan,LI QiuYun,MA GuoXi,GE Feng and WANG ZhiMin.SHRIMP zircon U-Pb ages and Hf isotopes of the intermediate-acidic rocks of Wanganzhen complex in northern part of Taihang Mountains and their geological implications[J].Acta Petrologica Sinica,2015,31(5):1409-1420. | |
| Authors: | SHEN ZhiChao HOU ZengQian YU Feng CHEN ZhiKuan LI QiuYun MA GuoXi GE Feng and WANG ZhiMin |
| Institution: | Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;China University of Geosciences, Beijing 10008;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;China University of Geosciences, Beijing 10008;Baoding Institute of Geological Engineering and Exploration of Hebei Province, Baoding 071051, China;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Baoding Institute of Geological Engineering and Exploration of Hebei Province, Baoding 071051, China;Baoding Institute of Geological Engineering and Exploration of Hebei Province, Baoding 071051, China;Baoding Institute of Geological Engineering and Exploration of Hebei Province, Baoding 071051, China |
| Abstract: | |
| Keywords: | Wanganzhen complex SHRIMP U-Pb age Hf isotopes Northern part of Taihang Mountains |
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