摘要
晚元古代耀岭河群火山岩可分为熔岩相和火山碎屑岩相。熔岩相以玄武质熔岩为主,在火山口附近有少量酸性熔岩。火山碎屑岩相由火山碎屑涌流堆积、火山碎屑流堆积和空落火山碎屑堆积组成。在近火山口的大山碎屑层序的底部有集块岩和岩块角砾分布。
The volcanic rocks of the Upper Proterozoic Yaolinghe Group can be divided into lava facies and pyroclastic facies. The lava facies is dominated by basaltic lava, with minor acid lava near the vent. The pyroclastic facies is composed of pyroclastic surge deposits, pyro-clastic flow deposits and pyroclastic free-falling deposits. There are agglomerates and block brecias in the lower part of the pyroclastic sequence near the vent.
出处
《湖北地质》
1993年第2期1-10,97,共11页
关键词
耀岭河群
火山岩
相
Yaolinghe Group
Volcanic rocks
Facies
