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

• 基础地质·矿产·盆地 • 上一篇下一篇

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

陈隽璐^1,2，李好斌³，王洪亮^2,4，何世平²，曾佐勋¹，徐学义¹，李向民²

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

收稿日期:2006-07-21 修回日期:1900-01-01 出版日期:2007-05-26 发布日期:2007-05-26
通讯作者: 陈隽璐

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^1,2， LI Hao-bin³,WANG Hong-liang^2,4，HE Shi-ping²，ZENG Zuo-xun¹，XU Xue-yi¹，LI Xiang-min²

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

Received:2006-07-21 Revised:1900-01-01 Online:2007-05-26 Published:2007-05-26
Contact: CHEN Jun-lu

摘要/Abstract

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

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.

Key words: Wangjiacha quartz diorite, LA-ICPMS, U-Pb isotope dating, Qinling and Qilian orogenic belts

中图分类号:

P597.3

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]. J4, 2007, 37(3): 423-0431.

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]. J4, 2007, 37(3): 423-0431.

参考文献

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

本文评价

推荐阅读 10

[1]	刘建峰，迟效国，周燕，王铁夫，金巍，周建波，董春艳，黎广荣. 小兴安岭东北部金林岩体全岩-角闪石Rb-Sr年龄[J]. J4, 2005, 35(06): 690 -0693 .
[2]	黄冠星, 孙继朝, 张英, 刘景涛, 张玉玺, 荆继红. 珠江三角洲污灌区地下水重金属含量及其相互关系[J]. J4, 2011, 41(1): 228 -234 .
[3]	肖长来，梁秀娟，崔建铭，兰盈盈,张君，李书兰，梁瑞奇，郑策. 确定含水层参数的全程曲线拟合法[J]. J4, 2005, 35(06): 751 -0755 .
[4]	郭振华，王璞珺，印长海，黄玉龙. 松辽盆地北部火山岩岩相与测井相关系研究[J]. J4, 2006, 36(02): 207 -0214 .
[5]	孙永河,付晓飞,吕延防,付广,阎冬. 地震泵抽吸作用与油气运聚成藏物理模拟[J]. J4, 2007, 37(1): 98 -0104 .
[6]	谢忠雷，陈卓，孙文田，尹波. 不同茶园茶叶氟含量及土壤氟的形态分布[J]. J4, 2008, 38(2): 293 -0298 .
[7]	贾军涛,王璞珺，邵锐，程日辉，张斌，侯景涛，李金龙，边伟华. 松辽盆地东南缘营城组地层序列的划分与区域对比[J]. J4, 2007, 37(6): 1110 -1123 .
[8]	康立明，任战利. 多参数定量研究流动单元的方法--以鄂尔多斯盆地W93井区为例[J]. J4, 2008, 38(5): 749 -0756 .
[9]	薛永超, 程林松. 白豹油田长8油藏成岩储集相[J]. J4, 2011, 41(2): 365 -371 .
[10]	姜纪沂, 张宇东, 谷洪彪, 左兰丽. 基于灰色关联熵的地下水环境演化模式判别模型研究[J]. J4, 2009, 39(6): 1111 -1116 .