| 秦皇岛柳江地区长龙山组石英砂岩物质源区组成——来自碎屑锆石U-Pb-Hf同位素的证据 |
| |
| 引用本文： | 第五春荣,孙 勇,刘养杰,韩 伟,戴梦宁,李永项.秦皇岛柳江地区长龙山组石英砂岩物质源区组成——来自碎屑锆石U-Pb-Hf同位素的证据[J].岩石矿物学杂志,2011,30(1):1-12. |
| |
| 作者姓名： | 第五春荣 孙 勇 刘养杰 韩 伟 戴梦宁 李永项 |
| |
| 作者单位： | 大陆动力学国家重点实验室,西北大学,地质学系,陕西,西安,710069 |
| |
| 基金项目： | 国家自然科学基金项目(40902056); 西北大学大陆动力学国家重点实验室科技部专项 |
| |
| 摘 要： | 在秦皇岛市柳江地区出露最古老的沉积岩为青白口系长龙山组石英砂岩,该石英砂岩与下伏的新太古代钾质花岗岩呈不整合接触。LA-ICPMS锆石U-Pb测年显示该区长龙山组石英砂岩中碎屑锆石年龄分布在2635～2487Ma之间,其物质源区较单一。与北京—蓟县标准剖面相比,本研究区在较长的一段地质时期为古陆壳的剥蚀区,直至新元古代早期,又沉积了长龙山组滨海相碎屑岩。碎屑锆石Hf同位素组成显示,它们的源区物质虽然有不同程度的壳幔混合,但主要来自于古老的地壳物质再循环,暗示在～2.5Ga其碎屑物质源区的地壳已经达到一定的规模和厚度。
|
| 关 键 词： | 华北克拉通 青白口系 长龙山组 石英砂岩 碎屑锆石 |
The protolith nature of quartz sandstone from Changlongshan Formation in Liujiang area, Qinhuangdao City: evidence of U-Pb and Hf-isotope from detrital zircons |
| |
| DIWU Chun_rong,SUN Yong,LIU Yang_jie,HAN Wei,DAI Meng_ning and LI Yong_xiang.The protolith nature of quartz sandstone from Changlongshan Formation in Liujiang area, Qinhuangdao City: evidence of U-Pb and Hf-isotope from detrital zircons[J].Acta Petrologica Et Mineralogica,2011,30(1):1-12. |
| |
| Authors: | DIWU Chun_rong SUN Yong LIU Yang_jie HAN Wei DAI Meng_ning and LI Yong_xiang |
| |
| Institution: | DIWU Chun-rong,SUN Yong,LIU Yang-jie,HAN Wei,DAI Meng-ning and LI Yong-xiang(State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi'an 710069,China) |
| |
| Abstract: | With the development of the in situ zircon SHRIMP U-Pb dating method and laser ablation ICP-MS,the study of the age distribution of detrital zircons from sedimentary rocks has become an effective way to find the source area of clastic material and also become an important topic all over the world.However,during zircon laser ablation(LA)-ICPMS dating,the U-Pb isotopic fractionation remains one of the principal obstacles for precise zircon dating.The experiments performed by the authors demonstrate that a low... |
| |
| Keywords: | North China Craton Qingbaikou System Changlongshan Formation quartz sandstone detrital zircons |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩石矿物学杂志》浏览原始摘要信息 |
| 点击此处可从《岩石矿物学杂志》下载免费的PDF全文 |
|
