五垛山复式岩基锆石U-Pb年龄及其地质意义  

Zircon U-Pb age of Wuduo mountain compound batholith and its geological significance

作　　者：易志强[1] 文景 赖群生 谢珂[1] 闫贺龙[1] 王忠建 李帅[2] 

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院,郑州450001 [2]桐柏县国土资源局,河南桐柏474750

出　　处：《地质找矿论丛》2017年第4期594-603,共10页Contributions to Geology and Mineral Resources Research

基　　金：河南省地勘基金项目"镇平县幅;石门幅;安皋幅1:5万区域地质;区域矿产调查"(编号:ZB[2009]57号-5)资助

摘　　要：五垛山复式岩基位于北秦岭构造带东段,地处朱阳关—夏馆断裂和乔端—瓦穴子断裂之间,整体呈NWW向展布,由多个岩体复合组成,具多期次岩浆活动特征,岩性主要为黑云母二长花岗岩。本文在其解体出来的石门序列和五垛山序列中,采集5件样品进行了锆石U-Pb年龄值测定。测定结果对该区岩浆活动、构造背景及区域构造演化、地层时代确定等具有一定的地质意义。Wu Duoshan compound batholith is located between Zhuyangguan-Xiaguan fault and Qiaoduan-Waxuezi fault in the eastern North Qinling orogenic belt.Generally,the batholith extends in NWW direction and consists of several intrusive bodies characteristic of multi-intrusion.Now it is divided into several series and five samples are collected from series Shiman and Wuduoshan and the zircon U-Pb age dated.The result is significant to determine the magmatic activity,tectonic setting,regional tectonic evolution and stratigraphic time.

关 键 词：五垛山复式岩基 锆石 LA-MC-ICP-MS年龄 石门序列 五垛山序列 河南省 

分 类 号：P588.121[天文地球—岩石学] P597.1[天文地球—地质学]