东天山卡瓦布拉克北缘环状熔融岩系研究

RING MELTING ROCK SERIES OF NORTH FRINGE OF KAWABULAKE OF EASE-TIAN SHAN REGION IN XIN JIANG

卡瓦布拉克北缘环状熔融岩系由内向外显示了具岩浆成因、超变质成因和变质成因组成的温压条件递减的热熔融扩散环.环中有麻粒岩残核、中基性深成岩,外围环绕数层具特殊岩石矿物组合和结构构造的钾质花岗岩层圈,构成韵律状"长英质顶盖".各层圈以热熔融改造为主,构造变形较弱,是深部热隆向上穿蚀不同层圈形成的环状熔融岩系.

Ring melting rock series of north fringe of Kawabulake manifest thermal-melting diffusion ring on gradually decreasing temperature and pressure conditions of magmatic origin,super-metamorphic origin and metamorphic origin from inner to outer.There was granulite residual core and moderate to basic plutonic rock in the ring.Outer neutralbasic hypogene rock was surrounded by several layers of special potassicgranite which has special mineral association and structure,composed the rhythmless felsic upper layer on the section.Every layer-cycle,which was mainly reformed by thermal-melting and in which tectonic deformation was very weak,was formed in a set of rock combination because deep uprising dome got throngh and erosed different Layer-cycles.