摘要
本文根据野外地质特征、岩相学特征以及岩石化学和地球化学特征,将火山碎屑流和涌浪堆积归纳为三种不同的岩相组分,即次火山型熔结凝灰岩组合、涌浪型熔结凝灰岩组合和灰流型熔结凝灰岩组合。对这三种不同的岩相组合,特别是其中的熔结凝灰岩的各类特征分别进行了详细论述和相互对比,并在此基础上提出了一个火山碎屑流和涌浪堆积的综合成因模式。
On the basis of geological, tithographical, petrochemical and geochemical features, the pyroclastic flow and surge deposits are classified into three rock associations, i.e., the subvolcanic type welded tuff,the surge type welded tuff and the ash flow type welded tuff associations. By detailed investigation and comparison of various features of these rock associations, especially the welded tuffs of the three types in them, the authors have proposed a comprehensive petrogenetic model of pyroclastic flow and surge deposits.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第1期66-74,共9页
Acta Petrologica Sinica
关键词
火山碎屑流
涌浪
堆积
次火山岩
Pyroclastic flow
Surge deposit
Subvolcanic rock
Ash flow
Petrogenetic model
