关于“辽宁北票兴隆沟火山岩的野外产状、岩石成因及地质意义”一文的辩正  

Discussion on "Field Occurrence and Origin of the Xinglonggou Igneous Rocks in Beipiao,Western Liaoning Province and Geological Significance"

作　　者：邵济安[1] 杨蔚[2] 

机构地区：[1]北京大学地球与空间学院,造山带与地壳演化教育部重点实验室,北京100871 [2]中国科学院地质与地球物理研究所,岩石圈演化国家重点实验室,北京100029

出　　处：《地质学报》2011年第3期379-382,共4页Acta Geologica Sinica

摘　　要：本文针对"辽宁北票兴隆沟火山岩的野外产状、岩石成因及地质意义"一文对笔者的质疑,阐述了对北票下侏罗统兴隆沟组开展地质调查的经过。结合质疑的问题,从野外地质观察和同位素年代学两个方面展开讨论,并且根据新获得的火山岩202Ma的Ar-Ar年龄,重申辽西北票兴隆沟组的时代属于早侏罗世的结论。In response to the doubts about our previous study raised by Wang Yang in his article ＂Field occurrence and origin of the Xinglonggou igneous rocks in Beipiao,Western Liaoning Province and geological significance＂,here we detailedly describe our geological investigation on the Xinglonggou formation of the Early Jurassic in Beipiao area.Focusing on the issues that were questioned,this paper mainly discusses our field observation and isotopic dating of the Xinglonggou formation.Based on a newly obtained Ar-Ar age（202 Ma）of the Xinglonggou andesite,we further confirm our previous conclusion that the age of Xinglonggou formation in Western Liaoning Province should be assigned to the Lower Jurassic.

关 键 词：北票 早侏罗世 兴隆沟组 霏细斑岩脉 同位素年龄 

分 类 号：P588.14[天文地球—岩石学]