|
|||||
|
|
| 燕山中段盘山花岗岩体锆石SHRIMP U-Pb年龄测定及其构造意义 | |
| 引用本文： | 马寅生,曾庆利,宋彪,杜建军,杨富全,赵越.燕山中段盘山花岗岩体锆石SHRIMP U-Pb年龄测定及其构造意义[J].岩石学报,2007,23(3):547-556. |
| 作者姓名： | 马寅生 曾庆利 宋彪 杜建军 杨富全 赵越 |
| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081 2. 中国地质科学院地质力学研究所,北京,100081;中国科学院地质与地球物理研究所,北京,100029 3. 中国地质科学院地质研究所,北京,100037 4. 国土资源部地质资料实物中心,河北三河,101601 |
| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
| 摘 要： | 位于燕山陆内造山带中段南缘的蓟县盘山花岗岩体由狼家峪、官庄、东罗庄和小盘山4个侵入单元组成,并发育侵入期后含斑石英二长岩脉,发育环绕岩体分布的周缘向斜并侵蚀早期东西向蓟县断裂。对前3个侵入单元及岩体西侧围岩中的顺层侵入的含斑石英二长岩脉等4件样品的锆石U-Pb(SHRIMP)定年结果为,年龄值界于203-207Ma,表明盘山花岗岩体侵位于三叠纪末期。这个年龄结果进一步限定了燕山陆内造山带东西向褶皱、逆冲/逆掩断层系统形成时代的上限,显示其形成时代为印支期。 |
| 关 键 词： | 燕山陆内造山带 花岗岩体 锆石SHRIMP测年 |
| 文章编号： | 1000-0569/2007/023（03）-0547-56 |
| 修稿时间： | 2006-09-17 |
SHRIMP U-Pb dating of zircon from Panshan granitoid pluton in Yanshan orogenic belt and its tectonic implications |
|
| MA YinSheng,ZENG QingLi,SONG Biao,DU JianJun,YANG FuQuan,ZHAO Yue.SHRIMP U-Pb dating of zircon from Panshan granitoid pluton in Yanshan orogenic belt and its tectonic implications[J].Acta Petrologica Sinica,2007,23(3):547-556. | |
| Authors: | MA YinSheng ZENG QingLi SONG Biao DU JianJun YANG FuQuan ZHAO Yue |
| Institution: | 1. Institute of C, eomechanics, Chinese Academy of Geological Sciences, Beijing 100081 ,China; 2. Institute of Geology and Geophysics, Chinese Academy of Sciertces, Beijing 100029, China ;3. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China; 4. Center of Geological Samples, CGS, Sanhe 101601,China |
| Abstract: | Panshan granitoid pluton situated in the southern margin of middle segment of Yanshan intracontinental orogenic belt consists of four intrusive units (Langjiayu,Guanzhuang,Dongluozhuang,Xiaopanshan) and porphyritic quartz-monzonite veins.The Panshan pluton is surrounded by an arc-shape syncline.The earlier EW-trending Jixian thrust fault is cut by the intrusive body.Three units of the pluton and a porphyritic quartz-monzonite vein have been dated by SHRIMP U-Pb of zircon.Their ages are between 203Ma and 207Ma,205Ma in average.It shows that the pluton was emplaceed at the end of the Late Triassic.The age indicates an upper limit that EW-trending folds,EW-trending thrust and nappe structures in Yanshan intracontinental orogenic belt have been taken place.That means the regional EW-trending fold-thrusting deformations in the Yanshan area were formed in Indosinian movement period. |
| Keywords: | Yanshan intracontinental orogenic belt Granitoids SHRIMP U-Pb dating of zircon |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《岩石学报》浏览原始摘要信息 | |
| 点击此处可从《岩石学报》下载免费的PDF全文 | |