我国第四纪火山活动的板块构造背景

PLATE TECTONICS AND QUATERNARY VOLCANICITY IN CHINA

There are 10 groups of Quaternary volcano in China. From the relationship between volcanicity and plate tectonics,the groups of volcano can be divided into the following 7 types: (1)volcanicity of ocean bottom and oceanic island of inside plate in South China Sea basin, (2)volcanicity of rift valley of plate margin in Leizhou Peninsula and north part of Hainan Island, (3)volcanicity of Taiwan Island arc which is a consuming zone of plates, (4)volcanicity of rift valley of plate margin in the bay of Bohai Sea, (5)volcanicity of rift valley of inside plate along the Da Hinggan Mountain and Datong fault trough, (6)volcanicity of plate margin along the Xiao Hinggan Mountain and Changbai Mountains which are affected by subduction of plates, and (7) volcanicity of inside plate in Tengchong and northern margin of Tibet Plateau which is affected by collision of plates.In summary,from the point of view of plate movement the distribution of Quaternary volcanicity in China can be epitomized into one basin,three rift valleies and three volcanic arcs.