摘要
营城组沉积早期的火山活动形成了徐家围子断陷大面积分布的火山岩,兴城地区火山岩平面分布与深大断裂关系密切,在营城组沉积时期沿着该断裂发生了大规模的火山喷发,形成了长条形的火山岩建造,兴城地区火山岩划分出3个近北北西走向的火山岩带,中带呈长条形。营城组火山岩类型复杂,主要由酸性岩的流纹岩、过渡岩性和中性岩的安山岩以及基性岩的玄武岩等组成。
Volcanic movement in the early period of sedimentation in Yingcheng Formation formed the volcanic rocks distributing in a large area in Xujiaweizi Rift. The areal distribution of the volcanic rocks in Xingcheng area is closely related to Shenda fracture. In the sedimentation period of Yingcheng Formation, a large scope of volcanic eruption took place along this fracture, forming a strip-shaped volcanic rocks construction. The volcanic rocks in Xingcheng area are divided into 3 NNW trend volcanic rock belts. The middle belt is strip-shaped. The volcanic rocks in Yingcheng Formation has complex types, mainly including rhyolite, andesite and basalt.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2005年第B08期11-12,共2页
Petroleum Geology & Oilfield Development in Daqing
关键词
兴城地区
火山岩
构造
酸性岩
中性岩
基性岩
Xingcheng area
volcanic rock
structure
acid rock
neutral rock
basic rock
