摘要
金刚台组火山岩分布在大别山北缘金寨与商城之间，为一套以爆发相为主体的中酸性钙碱性火山岩系，时代属晚侏罗世。根据喷发韵律、岩石组合、角砾成分和蚀变矿化等特征，可分为早、晚两个亚旋回。通过火山岩相和火山构造研究表明，火山活动以中心式喷发为特征，属复式火山机构类型。
The Jingangtai Formation distributed in Jinzhai Shangcheng area of the northern foot of Dabie mountains is a suite of intermediate acidity calc alkaline volcanic rocks, which mainly consists of eruptive facies and belongs to the Late Jurassic. It can be divided into early and late subcycles based on volcanic eruptive rhythm, rock association, composition of breccia and alteration metallization feature. The study of volcanic facies and tectonics shows that the volcanic activity is charactered by eruption of central type, its volcanic apparatus is composite volcano consisting of conical volcanoes and caderas.
出处
《现代地质》
CAS
CSCD
北大核心
1997年第2期237-243,共7页
Geoscience
基金
1:5万苏仙石幅
金寨县幅区调项目
关键词
大别山
金刚台组
火山地质
火山岩
岩相构造
the northern foot of Dabie mountains, Jingangtai Formation, volcanic geology, volcanic apparatus
