摘要
通过对大别山北坡中生代火山岩(罗山皇城山一带)的区域分布,地层序列,火山岩相构造以及构造变形的系统研究认为:上天梯-皇城山一带的火山碎屑岩为同源二次熔结凝灰岩喷发产物。本文从火山岩的喷发相入手,建立上天梯-皇城山一带的火山岩相构造;以火山岩相为基础,提出了上白垩统陈棚组的划分对应于韵律,层的划分对应于相序的新认识。
According to the systematic study of the distribution, stratigraphic sequence, structure and facies, and structural deformation of the volcanic rocks in the northem Dabie Mountains, it is suggested that the pyroclastic rock in the Shangtianti - Huangchengshan area is the cognate ejecta of the secondary ignimbrite. Started with the eruptive facies of the volcanic rocks, the structure and facies of the volcanic rocks in the Shangtianti -Huangchengshan area is constructed; Based on the volcanic facies, it is proposed that the division of the Chenpeng formation of the upper Cretaceous corresponds to the volcanic rhythm and the division of the volcanic layers corresponds to the facies sequence. The above study results are emphasized in the paper.
出处
《华南地质与矿产》
CAS
2008年第3期79-84,共6页
Geology and Mineral Resources of South China
基金
"大别山北麓中生代火山岩地质特征"项目资助
关键词
中生代火山岩石
相构造
相模式
皇城山一带
Mesozoic volcanic rock
structuxe and facies
facies pattern
Huangchengshan area
