【摘要】 大别地块中生代绝大部分钙碱性花岗岩类岩浆的形成、侵位与壳幔岩浆源区不同程度的混合作用、垂向侵位分异以及块体的差异隆升-剥露过程密切相关。中酸性岩浆活动和变质岩系的改造作用直接源于同一热事件,即为深部幔源基性岩浆不断向地壳添加,由此引发了中上地壳变质流变物质广泛熔融、侵位或受热改造。这一热事件可能为大别地块中生代隆升作用提供了必要的动力。更多还原

【Abstract】 Generation and emplacement of most Mesozoic calc-alkalic granitoids in the Dabie block are closely related to mixing and differentiation of crust-mantle source magmas as well as uplift-exhumation of the Dabie block. The authors conclude in this paper that Mesozoic magmatism and transformation of metamorphic rock series might be resulted from the same thermal event which provide kinetic energy for the upwelling of the Dabie block: continuous addition of mantle-drived mafic magma to the continental crust causing widespread melting, emplacement and heat transformation of metamorphic rocks in the middle-upper crust.更多还原