| 河北沧州小山火山的ESR年代学研究 |
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| 引用本文： | 尹功明,赵波,许建东,李建平,宋为娟,刘春茹.河北沧州小山火山的ESR年代学研究[J].岩石学报,2013,29(12):4415-4420. |
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| 作者姓名： | 尹功明 赵波 许建东 李建平 宋为娟 刘春茹 |
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| 作者单位： | 中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;中国地质大学地球科学与资源学院, 北京 100083;中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029; |
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| 基金项目： | 本文受国家自然科学基金项目（41172155、40972118）资助 |
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| 摘 要： | 河北沧州小山火山是河北平原，包括华北平原少有的出露地表的第四纪火山，也可能是华北平原区最后一个活动的火山。因此，此火山极其重要，可是至今没有确切的年代学数据。本次研究分别从小山火山地表和钻孔中采集了7个样品，进行了电子自旋共振测年。每个样品都分选出了石英颗粒，这表明火山堆积物不是纯的凝灰岩，而是火山活动时，同时带有地表物质的混入。样品ESR测年结果在误差范围内一致，平均值为41.4±8.6ka。小山火山活动可能发生于41ka BP.，测年结果表明小山火山最后一次活动在晚更新世晚期。
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| 关 键 词： | 小山火山 电子自旋共振(ESR)年代学 石英 火山活动 |
| 收稿时间： | 2013/9/10 0:00:00 |
| 修稿时间： | 2013/11/1 0:00:00 |
Electron Spin Resonance data of the Xiaoshan Volcano in Cangzhou, Hebei Province |
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| YIN GongMing,ZHAO Bo,XU JianDong,LI JianPing,SONG WeiJuan and LIU ChunRu.Electron Spin Resonance data of the Xiaoshan Volcano in Cangzhou, Hebei Province[J].Acta Petrologica Sinica,2013,29(12):4415-4420. |
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| Authors: | YIN GongMing ZHAO Bo XU JianDong LI JianPing SONG WeiJuan and LIU ChunRu |
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| Institution: | State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;School of the Earth and Resources, China University of Geosciences, Beijing 100083, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China; |
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| Abstract: | The Xiaoshan Volcano in Cangzhou, Hebei Province, is located on the coastal plain, 3km northeast of Haixing County. Its elevation is 35m, about 30m above the ground. The Xiaoshan is a hill composed by volcanic deposits, including clastic tuff, tuffite, tuffaceous sand and clay layers, olivine basalt. Xiaoshan Volcano is one of the few outcropping Quaternary volcanos on Hebei Plain, even North China Plain, and it is probably the last active volcano on North China Plain. Therefore, the study of this volcano is quite important, however, no detailed chronological data for this volcano has been obtained until now. In this study, seven samples were collected from the ground surface and drill hole of Xiaoshan Volcano, and dated by ESR method. Quartz grains were picked out from all samples, indicating that the volcanic deposits are not pure tuff, but mixed with surface materials during volcanic activities. The ESR ages of the samples are in agreement within error range, about 41.4±8.6ka in average, this proves that the activities of Xiaoshan Volcano probably occurred 41.4ka ago, and in the late period of Late Pleistocene. |
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| Keywords: | Xiaoshan Volcano Electron Spin Resonance (ESR) dating Quartz Volcanic activity |
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