| 太行神仙山髫髻山组火山岩锆石SHRIMP U-Pb年龄及其地质意义 |
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| 引用本文： | 许博,刘阳.太行神仙山髫髻山组火山岩锆石SHRIMP U-Pb年龄及其地质意义[J].矿物岩石地球化学通报,2012,31(3):257-260. |
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| 作者姓名： | 许博 刘阳 |
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| 作者单位： | 1. 中国地质大学(北京)地球科学与资源学院,北京,100083
2. 中国地质大学(北京)地球科学与资源学院,北京100083;中国冶金地质总局矿产资源研究院,北京100025 |
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| 摘 要： | 太行山中北段发育大量燕山期中-酸性火山岩,其中位于太行山北段的涞源县神仙山地区的断陷盆地正是其中—期构造-岩浆活动形成的逆冲推覆残片.本文报道了研究区内广泛出露的髫髻山组安山质角砾凝灰岩的锆石SHRIMP U-Pb年龄为131±2 Ma.该年龄对太行山地区的髫髻山组火山岩进行了时限上的厘定并限定了太行山北段北西向拉张断裂构造系统的发育时间.本研究为太行山中生代岩浆活动研究提供了新的依据.
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| 关 键 词： | 太行山 髫髻山组 SHRIMP U-Pb年龄 |
SHRIMP U-Pb Dating and Its Geological Implications for Zircon in the Tiaojishan Group Volcanic Rocks of the Shenxian Mountain in the Taihang Aera |
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| XU Bo
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LIU Yang.SHRIMP U-Pb Dating and Its Geological Implications for Zircon in the Tiaojishan Group Volcanic Rocks of the Shenxian Mountain in the Taihang Aera[J].Bulletin of Mineralogy Petrology and Geochemistry,2012,31(3):257-260. |
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| Authors: | XU Bo LIU Yang |
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| Institution: | 1,2 1.School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China; 2.Institute of Mineral Resources Research,China Metallurgical Geology Bureau,Beijing 100025,China |
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| Abstract: | The Yanshanian neutral-acidic volcanic rocks are widely spread in the north-middle section of the Taihang Mt.The faulted basin in the Laiyuan county,Shenxianshan region,north section of the Taihang Mt is geologically considered as the thrust nappe of one stage tectono-magmatic event.This paper reported that the zircon SHRIMP U-Pb dating result for the andesitic breccia tuff in the Tiaojishan group is 131±2Ma,which constrains the forming age of the Tiaojishan group and the timing of NW extensional structure in the north section of the Taihang Mt.This study provided new information for the Mesozoic magmatic events in the Taihang Mt. |
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| Keywords: | Taihang mountains Tiaojishan group SHRIMP U-Pb data |
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