随着廿世纪六十年代后期地质学的大进展——板块构造学说的兴起和应用,火山作用是岛弧、活动大陆边缘、大陆裂谷带以及洋中脊、大洋岛屿等地区的同期或非同期火山碎屑物的主要来源,从而构成了两种主要类型的火山碎屑物:一是由火山爆发所产生的火山碎屑物(或称火成碎屑物);另一是由已团结的火山岩经破坏而成的陆源火山碎 With the great progress of geology in the late 1960s - the rise and application of plate tectonics, the volcanism is the same or different period of the island arc, active continental margin, continental rift zone, mid-ocean ridge and oceanic island The main source of volcanic debris, which constitutes the two main types of volcanic debris: volcanic eruption generated by volcanic debris (or pyrotechnic material); the other is from the united Volcanic rock ruined terrain from volcanic debris