递增变质作用研究中的科学问题  

Current problems on progressive metamorphism

作　　者：李真 吴春明 LI Zhen;WU Chunming(College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大学地球与行星科学学院,北京100049

出　　处：《地质学报》2022年第9期3182-3194,共13页Acta Geologica Sinica

基　　金：中央高校基本科研业务费专项资金(编号E2E40401X2)资助的成果。

摘　　要：递增变质带广泛出露于全球元古宙至新生代的众多造山带中,但递增变质作用的成因尚不完全清楚。本文归纳了典型递增变质带的研究成果,讨论了如下几个悬而未决的科学问题:递增变质带的热源、变质反应与变质作用P-T-t轨迹特征、流体来源与作用、变质与变形耦合关系、花岗岩及混合岩化作用、递增变质带的折返/隆升机制,以及递增变质作用的构造成因等。本文综述了上述科学问题研究进展,探讨了递增变质作用的可能成因。Progressive metamorphic zones/sequences are commonly found in orogenic belts formed from the Proterozoic to Cenozoic elsewhere in the world, although genesis of such metamorphic terranes is not fully understood. This paper summarizes the following problems directly related to progressive metamorphism: heat source, metamorphic reactions and P-T-t paths, origin and function of fluid, metamorphism versus deformation, granite and migmatization, tectonic exhumation as well as tectonic formation of progressive zones. Finally, this paper discusses possible tectonic models of progressive metamorphism.

关 键 词：递增变质作用 递增变质带 变质反应 变泥质岩 热源 流体 

分 类 号：P588.3[天文地球—岩石学]