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蒙古国南戈壁Harshatewula地区二长花岗岩LA-ICP-MS锆石U-Pb年龄及其地质意义
引用本文:唐文龙,李俊建,付超,党智财,赵泽霖,Orolmaa Demberel,Altankhundaga Batsaikhan,Delgersaikhan Adiy,Enkhbat Tserendash.蒙古国南戈壁Harshatewula地区二长花岗岩LA-ICP-MS锆石U-Pb年龄及其地质意义[J].地质通报,2016,35(4):559-564.
作者姓名:唐文龙  李俊建  付超  党智财  赵泽霖  Orolmaa Demberel  Altankhundaga Batsaikhan  Delgersaikhan Adiy  Enkhbat Tserendash
作者单位:1. 中国地质调查局天津地质调查中心, 天津 300170;2. 中国地质科学院, 北京 100037;3. 蒙古地质科学院, 蒙古 乌兰巴托 211238;4. 蒙古地质调查局, 蒙古 乌兰巴托 211238
基金项目:中国地质调查局项目(编号:1212010561510、1212010811061、1212011120330、12120114001201、1212010781028、1212011085488)、国土资源公益性行业科研专项(编号:200811010)和国家国际科技合作项目(编号:2012DFB20220)
摘    要:对蒙古国南戈壁Harshatewula地区二长花岗岩进行LA-ICP-MS锆石U-Pb精确定年。结果表明,该岩体LA-ICP-MS锆石U-Pb年龄为326.4±1.1Ma,成岩时代为早石炭世。本次所测岩体年龄是迄今为止该区获得的较为可靠的直接测年数据,为北山构造带、哈尔力克-大南湖岛弧带与蒙古戈壁-天山古生代岛弧岩浆岩带为一条古生代岛弧岩浆岩带的认识提供了年龄依据,对该区构造地质演化研究具有重要意义。

关 键 词:锆石  二长花岗岩  Harshatewula  蒙古国
修稿时间:3/7/2016 12:00:00 AM

LA-ICP-MS zircon U-Pb dating of monzogranite of Harshatewula area in South Gobi province, Mongolia, and its geological significance
TANG Wenlong,LI Junjian,FU Chao,DANG Zhicai,ZHAO Zelin,OROLMAA Demberel,ALTANKHUNDAGA Batsaikhan,DELGERSAIKHAN Adiya and ENKHBAT Tserendash.LA-ICP-MS zircon U-Pb dating of monzogranite of Harshatewula area in South Gobi province, Mongolia, and its geological significance[J].Geologcal Bulletin OF China,2016,35(4):559-564.
Authors:TANG Wenlong  LI Junjian  FU Chao  DANG Zhicai  ZHAO Zelin  OROLMAA Demberel  ALTANKHUNDAGA Batsaikhan  DELGERSAIKHAN Adiya and ENKHBAT Tserendash
Institution:1. Tianjin Center of China Geological Survey, Tianjin 300170, China;2. Chinese Academy of Geological Sciences, Beijing 100037, China;3. Mongolian Academy of Geological Sciences, Ulaanbaatar 211238, Mongolia;4. Mongolia Geological Survey, Ulaanbaatar 211238, Mongolia
Abstract:High precision LA-ICP-MS zircon U-Pb dating of the Harshatewula monzogranites was conducted. The analyses indi-cate that the intrusion was formed at 327.0±2.1Ma, belonging to Early Carboniferous. The age is a relatively reliable and directly mea-sured datum which provides the evidence for the existence of an island arc magmatite belt composed of Beishan tectonic belt, Har-like-Dananhu islandarc belt and Gobi-Tianshan island arc magmatite belt. This result has great significance for the understanding of the tectonic-geological evolution in this area.
Keywords:zircon  monzogranite  Harshatewula  Mongolia
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