Abstract: AbstractGaojishan volcanic locates at Great Xing'an Range volcanic belt,Gaojishan volcanic is studied with "volcanic constructionlithologic rock faciesvolcanic sequence" mapping method.The study results show that the rock types developed in the Gaoji Mountain volcano are mainly rhyolitic crystal tuff,rhyolitic ignimbrite,rhyolite,black obsidian,etc..Lithofacies are mainly lacustrine accumulation phase,overflow phase,pyroclastic flow phase,transgressive phase,subvolcanic rock phase and steammagma explosion phase,and eruption sedimentary facies can be seen locally.According to the comprehensive analysis,the volcanic type of Gaojishan volcanic is caldera,and volcanic activity mainly experienced four stages,such as volcanic eruption stage,volcanic collapse stage,volcanic revival stage and tectonic destruction and denudation stage.

Key words: Gaojishan volcano,Lithological type,Lithofacies,Tectonic evolution