| 黑龙江张家湾岩体锆石U-Pb年龄与地球化学及其地质意义 |
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| 引用本文： | 任永健,曹光远,于汪,张旭,司玉庆,邓丽平. 黑龙江张家湾岩体锆石U-Pb年龄与地球化学及其地质意义[J]. 化工矿产地质, 2014, 0(4): 193-207 |
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| 作者姓名： | 任永健 曹光远 于汪 张旭 司玉庆 邓丽平 |
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| 作者单位： | 中化矿山总局地质研究院,河北涿州072754 |
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| 基金项目： | 致谢：本文是黑龙江1：5万南蛤拉河子等四幅区域地质矿产调查项目全体成员的共同成果,感谢中国地质科学院国家分析测试中心在锆石LA-ICP-MS U-Pb分析测试过程中给予的大力帮助,同时对审稿专家提出的宝贵意见致以崇高的敬意! |
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| 摘 要： | 通过对兴蒙造山带东段小兴安岭-张广才岭地区张家湾岩体石英闪长岩、正长花岗岩进行的锆石LA-ICP-MS U-Pb年龄分析测试、岩石地球化学的各项分析测试,综合分析研究表明,石英闪长岩形成于早侏罗世(176.2±1.8Ma),具浆混花岗岩特点,属壳幔混合成因;正长花岗岩形成于中侏罗世(166±2.2Ma),具"S"型花岗岩的地球化学属性,属壳源熔融成因。结合该区大地构造背景,认为张家湾岩体很可能是环太平洋增生地体的佳木斯板块与西侧的张广才岭地块碰撞造山作用形成。
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| 关 键 词： | 张家湾岩体 锆石 U-Pb 年龄 岩石地球化学 壳幔混合 壳源熔融 |
ZIRCON U-PB AGES AND GEOCHEMISTRY AND ITS GEOLOGICAL SIGNIFICANCE OF ZHANGJIAWAN PLUTON IN HEILONGJIANG PROVINCE |
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| Ren YongJian Cao GuanYuan,Yu Wang Zhang Xu Si Yuqing Deng Liping. ZIRCON U-PB AGES AND GEOCHEMISTRY AND ITS GEOLOGICAL SIGNIFICANCE OF ZHANGJIAWAN PLUTON IN HEILONGJIANG PROVINCE[J]. Geology of Chemical Minerals, 2014, 0(4): 193-207 |
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| Authors: | Ren YongJian Cao GuanYuan Yu Wang Zhang Xu Si Yuqing Deng Liping |
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| Affiliation: | ( Geological Institute of China Chemical Geology and Mine Bureau, Zhuozhou, Hebei, 072754, China) |
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| Abstract: | Through an integrated geochronological （zircon U-Pb age） and rock geochemistry studies of quartz-diorite and syenogranite from Zhangjiawan pluton located in the eastern of Xingmeng orogenic belt, the studies indicated that quartz-diorite（176.2±1.8Ma）had a mantle-crust mixing origin and S-type syenogranite had a crustal source melting origin with an age of 166±2.2Ma. Combined with regional geotectonic background, Zhangjiawan pluton was fromed by the collisional orogenesis of Zhangguangcailing block and Jiamusi block which belonged to circum-Pacific accretionary terrane. |
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| Keywords: | Zhangjiawan pluton zircon U-Pb ages rock geochemistry mantle-crust mixing crustal sourceMelting |
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