大兴安岭中段央格力雅山火山喷发盆地火山活动旋回和构造特征  

Volcanic Activity Cycles and Volcanic Structure Characteristics of Yanggeliya Eruption Basin,Central Great Xing’an Range

作　　者：张顺新 黄新华[1] 刘伟[1] 肖亮 姜魁[1] 梁永科 ZHANG Shunxin;HUANG Xinhua;LIU Wei;XIAO Liang;JIANG Kui;LIANG Yongke(Brigade of Geological and Mineral Exploration and Development Bureau of Hunan Province)

机构地区：[1]湖南省地质矿产勘查开发局四一八队,湖南省娄底市417000

出　　处：《现代矿业》2022年第6期42-46,50,共6页Modern Mining

基　　金：内蒙古自治区地质勘查项目(编号:NMKD2014-26)。

摘　　要：央格力雅山火山喷发盆地处于环太平洋中生代构造—岩浆域大兴安岭火山岩区加格达奇—赤峰火山岩带。通过研究盆地火山岩岩石学特征、火山岩岩相特征以及盆地演化特征,将晚侏罗世火山活动划分为3个喷发旋回、新生代火山活动为1个喷发旋回,火山机构类型主要为锥火山、破火山、火山穹窿、裂隙式火山。中生代以来太平洋板块继续北西向俯冲过程中所形成的挤压环境和岩浆活动主导了该时期火山活动的构造演化。Yanggeliya volcanic eruption basin is located in the Jiagedaqi-Chifeng volcanic belt in the Great Xing’an Range volcanic area in the Mesozoic tectono-magmatic domain around the Pacific Ocean.By studying the characteristics of petrology,facies and evolution of volcanic rocks in the basin,the Late Jurassic volcanic activity can be divided into three eruptive cycles,the Cenozoic volcanic activity is one eruptive cycle.The volcanic mechanism type are cone volcano,broken volcano,volcanic dome and fissure volcano.The tectonic evolution of volcanic activity was dominated by the compressional environment and magmatic activity formed during the continuous NW direction subduction of the Pacific plate since Mesozoic.

关 键 词：火山喷发盆地 火山活动旋回 火山构造 

分 类 号：P317[天文地球—固体地球物理学] P548[天文地球—地球物理学]