| 北秦岭罗汉寺岩群锆石SHRIMP U-Pb年龄及其构造地质意义 |
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| 引用本文： | 崔建堂,韩芳林,张拴厚,王根宝,王北颖,王学平,郭岐明,彭海练,王金安,彭俊英,卢婷,付垒,崔海曼.北秦岭罗汉寺岩群锆石SHRIMP U-Pb年龄及其构造地质意义[J].西北地质,2011(4):8-14. |
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| 作者姓名： | 崔建堂 韩芳林 张拴厚 王根宝 王北颖 王学平 郭岐明 彭海练 王金安 彭俊英 卢婷 付垒 崔海曼 |
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| 作者单位： | 陕西省地质调查院;陕西省国土资源厅; |
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| 基金项目： | 中国地质调查局项目《陕西省地质系列图件编制与综合研究》(1212010811031) |
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| 摘 要： | 对出露于北秦岭周至黑河小王涧黄草坪南罗汉寺岩群(弧前盆地沉积楔形体)中的英安质晶屑凝灰岩,进行了锆石SHRIMP U-Pb同位素测年研究,获得该群晶屑凝灰岩形成时代为(491±5)Ma,反映该岩群跨及早奥陶世.结合商丹带北侧广泛发育的加里东期岛弧花岗岩带和前人在其他地区测定该岩群的最新年代信息,认为本次测年数据为北秦岭...
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| 关 键 词： | 北秦岭 罗汉寺岩群 锆石SHRIMP U-Pb年龄 |
North Qinling Luohansi Rock Group SHRIMP U-Pb Zircon Age and Its Tectonic Significance |
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| CUI Jian-tang,HAN Fang-lin,ZHANG Shuan-hou,WANG Gen-bao,WANG Bei-ying,WANG Xue-ping,GUO Qi-ming,PENG Hai-lian,WANG Jin-an,PENG Jun-ying,LU Ting,FU Lei,CUI Hai-man.North Qinling Luohansi Rock Group SHRIMP U-Pb Zircon Age and Its Tectonic Significance[J].Northwestern Geology,2011(4):8-14. |
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| Authors: | CUI Jian-tang HAN Fang-lin ZHANG Shuan-hou WANG Gen-bao WANG Bei-ying WANG Xue-ping GUO Qi-ming PENG Hai-lian WANG Jin-an PENG Jun-ying LU Ting FU Lei CUI Hai-man |
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| Institution: | CUI Jian-tang1,HAN Fang-lin1,ZHANG Shuan-hou1,WANG Gen-bao1,WANG Bei-ying1,2,WANG Xue-ping1,GUO Qi-ming1,PENG Hai-lian1,WANG Jin-an1,PENG Jun-ying1,LU Ting1,FU Lei1,CUI Hai-man1(1.Shaanxi Institute of Geological Survey,Xi'an 710065,Chian,2.Shaanxi Province Department of Land & Resources,Xi'an 710037,China) |
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| Abstract: | The paper presents SHRIMP U-Pb dating results of zircon from south Luohansi group(the sedimentous wedge of forearc basin),cropping out from the north Qinling to Heihe River Xiaowangjian Huangcaoping.The age of crystal tuff obtained was 491±5 Ma.The obtained age indicates that this group is through Ordovician.Combined to granite belt of Caledonian stage widely grown in northern side of Shangdan belt,and the newest age information measured by predecessors in other places,the important evidence of isotopes chronology was offered to subduction of northern Qinling Paleozoic Oceanic basin and plate convergence.At the same time,the powerful evidence was provided to research subduction collision age of ophiolitic mixtite belt. |
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| Keywords: | north Qinling the Luohansi group Zircon SHRIMP U-Pb dating dacite crystal tuff |
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