| 秦祁结合部位王家岔石英闪长岩体锆石LA-ICPMS定年及地质意义 |
| |
| 引用本文： | 陈隽璐,李好斌,王洪亮,何世平,曾佐勋,徐学义,李向民.秦祁结合部位王家岔石英闪长岩体锆石LA-ICPMS定年及地质意义[J].吉林大学学报(地球科学版),2007,37(3):423-431. |
| |
| 作者姓名： | 陈隽璐 李好斌 王洪亮 何世平 曾佐勋 徐学义 李向民 |
| |
| 作者单位： | 1.中国地质大学 地球科学学院，武汉 430074;2.西安地质矿产研究所，西安 710054;3.中国地质大学 地球科学与资源学院,北京 100083;4.西北大学 地质学系，西安 710069 |
| |
| 基金项目： | 中国地质调查局地质调查项目 |
| |
| 摘 要： | 出露于秦岭、祁连造山带结合部位的王家岔石英闪长岩体，侵入于变质基底陇山岩群之中。岩石学、岩石化学、地球化学特征显示石英闪长岩侵入体具有俯冲花岗岩特征。利用LA-ICPMS（激光剥蚀等离子体质谱）测年技术，对石英闪长岩进行单颗粒锆石微区U-Pb同位素测定，获得加权平均年龄为（454.7±1.7） Ma，代表了岩石的形成年龄。这一新的成果资料，对研究秦祁结合部位早古生代构造演化、造山过程及秦、祁造山带的关系具有重要意义。
|
| 关 键 词： | 王家岔石英闪长岩 LA-ICPMS U-Pb同位素定年 秦祁结合部位 |
| 文章编号： | 1671-5888（2007）03-0423-09 |
| 收稿时间： | 2006-07-21 |
| 修稿时间： | 2006-07-21 |
LA-ICPMS Zircon U-Pb Dating of a Quartz Diorite Pluton from Wangjiacha, the Junction Area Between the Qinling and Qilian Orogenic Belts and Its Tectonic Significance |
| |
| CHEN Jun-lu,LI Hao-bin,WANG Hong-liang,HE Shi-ping,ZENG Zuo-xun,XU Xue-yi,LI Xiang-min.LA-ICPMS Zircon U-Pb Dating of a Quartz Diorite Pluton from Wangjiacha, the Junction Area Between the Qinling and Qilian Orogenic Belts and Its Tectonic Significance[J].Journal of Jilin Unviersity:Earth Science Edition,2007,37(3):423-431. |
| |
| Authors: | CHEN Jun-lu LI Hao-bin WANG Hong-liang HE Shi-ping ZENG Zuo-xun XU Xue-yi LI Xiang-min |
| |
| Institution: | 1.Faculty of Earth Sciences，China University of Geosciences，Wuhan 430074,China;2.Xi’an Institute of Geology and Mineral Resource,Xi’an 710054,China;3.School of the Earth Sciences and Resources,China University of Geosciences，Beijing 100083,China;4.Department of Geology，Northwest University，Xi’an 710069,China |
| |
| Abstract: | Wangjiacha quartz diorite, outcropped in the junction area between Qinling and Qilian orogenic belts, was intruded into the metamorphic complex of the Longshan Group. Assemblage, chemistry and geochemical characteristics of the quartz diorite intrusion show the characteristics of subduction granite. Using LA-ICPMS(Laser-iso plasma mass spectrum) dating technique, U-Pb isotope dating for tiny areas of single zircons from the quartz diorite gives a weighted average age of (454.7±1.7) Ma, which probably stands for the formation age of the rocks. This dating is of great significance to the research on the Early Paleozoic tectonic evolution, on the orogenic processes in the junction area between the Qinling and Qilian and on the relationship between the Qinling and Qilian orogenic belts. |
| |
| Keywords: | Wangjiacha quartz diorite LA-ICPMS UPb isotope dating Qinling and Qilian orogenic belts |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《吉林大学学报(地球科学版)》浏览原始摘要信息 |
| 点击此处可从《吉林大学学报(地球科学版)》下载免费的PDF全文 |
