摘要
得荣县古学乡毛屋一带冰峰组大地构造位置属于中咱-中甸地块,组内火山岩岩石类型主要包括:玄武岩、玄武质火山角岩、玄武质岩屑凝灰岩、杏仁状玻基玄武岩、玄武质角砾熔岩等。冰峰组火山岩属于钙碱性系列,分配模式具右倾型特征,Eu显示正异常,Ce显示弱负异常,属于大陆板内拉张构造环境。
TheBingfeng Formation in Mawu area of Guxue Township,Derong County belongs to Zhongza-ZhongdianBlock.The volcanic rock types in theBinfeng Formation mainly include basalt,basaltic volcanic hornstone,basaltic lithic tuff,almond-shaped vitreous basalt and basaltic breccia lava.The volcanic rocksbelong to the calc-alkaline series,and the REE distribution pattern is right-leaning,and have positive Eu anomalies and negative Ce anomalies,which formed in the continental intraplate tensile tectonic environment.
作者
唐军华
凌亚军
王茜
任海涛
TANG Junhua;LINGYajun;WANG Qian;REN Haitao(The 4th Geological Brigade of Sichuan,Chengdu 611130)
出处
《四川地质学报》
2023年第3期505-511,共7页
Acta Geologica Sichuan
基金
“西南三江有色金属资源基地调查”项目(项目编号DD20160016)资助。
关键词
冰峰组
中咱-中甸地块
板内拉张构造环境
得荣县
Bingfeng Formation
Zhongza-ZhongdianBlock
intraplate tensile tectonic environment
Derong County
