摘要
对黑龙江省东南部兴凯-云山一带的中生代火山岩岩石组合、地球化学特征、岩浆来源及喷发旋回特征的研究,将中生代火山岩划分为五个岩浆演化旋回。研究区中生代火山岩整体为一套钙性英安质岩石系列,晚期则出现钙碱性和碱钙性系列的安山质-流纹质演变组合,岩浆来源于下地壳岩浆的分离结晶。综合研究表明,研究区中生代火山岩形成于板块挤压活动大陆边缘环境。
Based on the study of the rock assemblage,geochemical characteristics,magma source and eruption cycle characteristics of the Mesozoic volcanic rocks in Xingkai-Yunshan,southeastern Heilongjiang Province,the Mesozoic volcanic rocks are divided into five magmatic evolution cycles.The Mesozoic volcanic rocks in the study area are a set of calc-dacitic rock series.In the late stage,there is an andesitic-rhyolitic evolution combination of calc-alkaline and alkali-calcic series,and the separation and crystallization of lower crustal magma from magma source.The comprehensive study shows that the Mesozoic volcanic rocks in the study area are formed in the plate extrusion active continental margin environment.
作者
韩宇
李艳斌
侯宪壮
侯荣俊
陈军典
于清深
HAN Yu;LI Yan-bin;HOU Xian-zhuang;HOU Rong-jun;CHEN Jun-dian;YU Qing-shen(Liaoning Provincial Natural Resources Affairs Service Center,Shenyang 110033,China;Liaoning Geological and Mineral Survey Institute Co.,Ltd.,Shenyang 110033,China;Liaoning Provincial Geology and Mineral Group Geological Data Central Co.,Ltd.,Shenyang 110122,China;Sino-Energy Technology Service Co.,Ltd.,Korla 841000;Liaoning Geological Exploration and Mining Group Co.,Ltd.,Shenyang 110032,China)
出处
《有色矿冶》
2025年第6期4-8,共5页
Non-Ferrous Mining and Metallurgy
关键词
中生代火山岩
兴凯地块
岩石地球化学
活动大陆边缘
mesozoic volcanic rocks
Xingkai terrain
lithogeochemistry
active continental margin
