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.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2011年第3期379-382,共4页
Acta Geologica Sinica
关键词
北票
早侏罗世
兴隆沟组
霏细斑岩脉
同位素年龄
Beipiao
the Early Jurassic
the Xinglonggou formation
felsophyre vein
isotopic age
