摘要
通过对胶北臧家庄盆地中生代火山岩系的构造位置、产出状态、岩石特征、地球化学特征、相序列组合及同位素年龄等资料的综合分析，结合区域构造特征，认为其属中国东部中生代火山岩带之桃村—莱阳火山 沉积盆地构造组成部分；岩石类型为玄武岩、安山岩、英安岩及流纹岩等，属钙碱性系列，按相序列可划分为安山质岩系、英安质岩系及凝灰质粘土岩三个相组；构成两个火山旋回。
By comprehensive analysis,which include structural location,occurrence state,rock characteristics,geochemistry,phase sequence combinations and isotopic ages of Mesozoic volcanic rocks in Zangjiazhuang basin in Jiaobei, and considering regional structural characteristics,it is said that the volcanic rocks belong to a part of structural constitution of Taocun-Laiyang volcanic sedimentary basin in east China Mesozoic volcanic rock belts.Its rock types are basalt,andesite,dacite and liparite,etc.,belonging to calc-alkaline rocks.According to phase sequences,it can be divided into three phase-groups of andesitic rock system,dacitic rock system and tuffaceous clay rock system;and two volcanic circles.
出处
《山东地质》
1999年第4期11-17,共7页
Geology of Shandong
关键词
火山-沉积盆地
中生代
火山岩
火山活动
地球化学
Volcanic-sedimentary basin
Mesozoic
phase sequence
volcanic structure Jiaobei area
