| 辽源建安—个新的晚白垩世火山群的确定 |
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| 引用本文： | 郭真,贾海明,管宏图,于明宽,裴福萍,许文良,靳克. 辽源建安—个新的晚白垩世火山群的确定[J]. 世界地质, 2014, 33(4): 787-792 |
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| 作者姓名： | 郭真 贾海明 管宏图 于明宽 裴福萍 许文良 靳克 |
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| 作者单位： | 1. 吉林省地质资料馆，长春 130061; 2. 吉林省地质调查院，长春 130061; 3. 中化地质矿山总局 吉林地质勘查院，长春 130061; 4. 吉林大学 地球科学学院，长春 130061 |
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| 摘 要： | 在辽源建安火山群内运用全岩K-Ar测年方法首次获得老道山、双山、毛山及四甲山火山锥体玄武岩的年龄分别为(99.28±1.59)Ma、(91.70±1.67)Ma、(82.55±1.94)Ma、(82.18±2.37)Ma,可确认建安火山群是当前中国东北乃至中国东部规模最大的晚白垩世火山群。这一结果为探讨中国东部晚白垩世时期的构造演化提供了精确的年代学资料,同时,该火山群的形成与寻找无机成因的油气藏具有重要联系,也为该地区蓝宝石矿及伴生宝石矿的初查工作提供了依据。
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| 关 键 词： | 辽源建安 晚白垩世 火山群 玄武岩 |
Determination of a new Late- Cretaceous volcano group in Jian-an of Liaoyuan |
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| GUO Zhen,JIA Hai-Ming,GUAN Hong-Tu,YU Ming-Kuan,PEI Fu-Ping,XU Wen-Liang,JIN Ke. Determination of a new Late- Cretaceous volcano group in Jian-an of Liaoyuan[J]. Global Geology, 2014, 33(4): 787-792 |
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| Authors: | GUO Zhen JIA Hai-Ming GUAN Hong-Tu YU Ming-Kuan PEI Fu-Ping XU Wen-Liang JIN Ke |
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| Affiliation: | 1. Geology Date Museum of Jilin Province，Changchun 130061，China; 2. Institute of Geologic Survey of Jilin Province，Changchun 130061，China; 3. Jilin Geological Exploration Institute，China Chemical Geology and Mine Bureau，Changchun 130061，China; 4. College of Earth Sciences，Jilin University，Changchun 130061，China |
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| Abstract: | The whole rock K- Ar dating method was used to date the basalts from Laodaoshan-Shuangshan- Maoshan- Sijiashan volcanic cones in Jian''an volcano group of Liaoyuan，which are (99. 28 ±1. 59) Ma，(91. 70 ± 1. 67) Ma，(82. 55 ± 1. 94) Ma and (82. 18 ± 2. 37) Ma，respectively． The results show that Jian''an volcano group was the largest Late Cretaceous volcano group in Northeast China or even in East China． This investigation provided exact chronological data for Late Cretaceous tectonic evolution in East China． The formation of this volcano group had close relationship with the inorganic origin reservoir，and also provided basis for prospecting of sapphire or its associated deposits． |
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| Keywords: | Jian-an of Liaoyuan Late Cretaceous volcano group basalt |
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