摘要
福鼎山后尖玄武岩位于福鼎—福清北东向断裂带北东段,呈岩筒状产于石帽山群下组下段火山沉积岩中,属钠质碱性玄武岩系列,由玄武质火山角砾岩、碧玄岩、橄榄辉长-玄武岩组合,经历火山爆发、喷溢、次火山侵入3个阶段而形成。
The basalt in Shanhoujian, Fuding City is situated at the north-east segment of the Fuding-Fuqing fault belt with the northeastern trend, exists in a volcanic pipe and is discovered in the volcanic-sedimentary rock of Lower Cretaceous Shimaoshan Group Lower Formation. It belongs to the sodium alkali-basalt series and is made up of basalt volcanic breccia, basanite and ankaramite. It gets into shape undergoing the three stages of volcanic eruption, effusion and subvolcanic invasion.
出处
《福建地质》
2008年第4期369-376,共8页
Geology of Fujian
关键词
岩石特征
形成机制
玄武岩筒
福鼎山后尖
lithologic characteristics, mechanisms of formation, basalt pillar, Fuding City
