大别山南北缘中—新元古代火山岩系列、类型、组合及意义  

Series,Types and Association of Volcanic Rocks on the Outskirts of the Dabie Basement Complex in China and Their Significance

作　　者：杨荣兴[1] 周珣若[2] 邱家骧[2] 马文璞[2] 

机构地区：[1]桂林工学院,541004 [2]中国地质大学,北京100083

出　　处：《地质论评》1999年第S1期655-659,共5页Geological Review

基　　金：国家自然科学基金项目(编号49472150)资助

摘　　要：大别深变质基底杂岩外缘中—新元古代双峰式火山岩系,均以钙碱性系列为主,少量的拉斑玄武岩系列和碱性玄武岩系列,但南缘出现少量的钾玄岩系列。南、北缘火山岩系的主要岩石组合种属也基本相同。南缘火山岩稍复杂一点,除玄武岩类、玄武安山岩、流纹岩外,还有少量英安岩,以及很少量钾玄岩系列的夏威夷岩和橄榄粗安岩,这是本区新发现的火山岩类型。The Meso—Neopreterozoic bimocdal volcanic series on the outskirts of the Dabie higher grade metamorphic basement complex, extens discontinuously in the Qichun—Mulanshan—Yudian area on the southern outskirts, and in the Dingyuan area on the northern outskirts of the Dabie basement complex. Calc-alkaline series is the main volcanic series, the others are tholeiite basalt series and alkali basalt series. The shoshonital series is discovered in the southern outskirts firstly. Besides basalt, basaltic-andesite, dacite and rhyolite, hawaiite and mugearite which belong to shoshonital series are descovered at first in this study.

关 键 词：双峰式火山岩 中—新元古代 大别山 

分 类 号：P588.1[天文地球—岩石学]