| 河北平原第四纪火山岩时代 |
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| 引用本文： | 裴军令 刘,锋 胡云壮 周在征 李建锋 赵,越.河北平原第四纪火山岩时代[J].中国地质,2015(6):1765-1765. |
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| 作者姓名： | 裴军令 刘 锋 胡云壮 周在征 李建锋 赵 越 |
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| 作者单位： | 1.国土资源部古地磁与古构造重建重点实验室, 中国地质科学院地质力学研究所, 北京 100081; 2.中国地质调查局天津地质矿产研究所, 天津 300170 |
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| 基金项目： | 国家自然科学基金项目(41172177)和中国地质调查局项目(1212011120085)联合资助。 |
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| 摘 要： | 河北平原第四纪火山岩时代对理解华北东部新构造运动具有重要意义,但是对其准确年龄一直缺少研究。位于河北省海兴县附近CK3孔岩心揭示了4次第四纪的火山活动。针对第1次火山岩底部样品开展40Ar/39Ar测试,其年龄为(2.36±0.05)Ma。结合磁性地层研究结果,限定了其他3次火山活动时代分别为约1.3 Ma、35~70 ka和10~15 ka。
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| 关 键 词： | 河北平原 第四纪火山岩 40Ar?39Ar年代学 磁性地层学 |
Timing of Quaternary volcanic rocks in Hebei plain |
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| PEI Jun-ling,LIU Feng,HU Yun-zhuang,ZHOU Zai-zheng,LI Jian-feng,ZHAO Yue.Timing of Quaternary volcanic rocks in Hebei plain[J].Chinese Geology,2015(6):1765-1765. |
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| Authors: | PEI Jun-ling LIU Feng HU Yun-zhuang ZHOU Zai-zheng LI Jian-feng ZHAO Yue |
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| Institution: | 1. Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Land and Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; 2. Tianjin Institute of Geology and Mineral Resources, China Geological Survey, Tianjin 300170, China |
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| Abstract: | Abstract: It is important to date the Quaternary volcanic rocks for understanding the neotectonic activities in Hebei plain. The 500.25 meter drill hole CK3 located near Haixing Country of Hebei Province revealed 4 layers of volcanic rocks. The 40Ar/39Ar age of the first stage of Quaternary volcanic rocks is 2.36±0.05 Ma. Combined with the magnetostratigraphy of CK3 core, the time of volcanic activities in Hebei Plain should be about 1.3 Ma, 35?70 ka and 10?15 ka, respectively. |
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| Keywords: | Hebei plain Quaternary volcanic rock 40Ar/39Ar geochronology magnetostratigraphy |
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