中国东南大陆中、新生代岩浆作用与壳幔演化动力学  

THE MESOZOIC-CANOZOIC MAGMATISM AND GEODYNAMICS OF CRUSTAL AND MANTLE EVOLUTION IN SOUTHEAST CHINA CONTINENT

作　　者：毛建仁[1] 

机构地区：[1]南京地质矿产研究所,210016

出　　处：《火山地质与矿产》1994年第2期1-11,共11页Volcanology & Mineral Resources

摘　　要：本文论述了中国东南大陆中、新生代岩浆作用的多旋回性和迁移性，构造演化与岩石系列和岩石组合的关系。前寒武纪岩石圈制约本区中、新生代岩浆作用和成矿作用，并在三种岩石围岩石学一地球物理综合模型中反映。总结了四个主要构造期岩浆作用源区特征和构造背景，并根据不同大地构造单元在碰撞造山后近南北向刊近北东向伸展裂解，从造山带挤压碰撞向伸展裂解机制转换过程探讨了中、新生代岩浆作用和壳幔演化动力学。A discussion was made in this paper to the multiple Cycles and the migrations of the MesozoicCenozoic magmatism in Southeast China continent, as well aS the correlation of tectonic evolution and rock series and rock assemblages. The Mesozoic-Cenozoic magnatism and metallization in the region are constricted by the characteristics of Precambrain lithosphere, which is reflected by three models of the lithospheric structure in Southeast China continent. It is suggested that the region can be divided into four tectonic periods and the characters of source region and the tectonic envirotunent of crustal as well as mantle evolution for the magmatic products, which are produced in various tectonic periods, are discussed. thed on the facts of extension- breakup in the direction of nearly south-north and roughly northeast after collisional orogeny of the different tectonic units, the Mesozoic-Cenozoic magmatism and geodynamics of crustal the mantle evolution can be explained by the transitional process from compressive collision to extensional-breakup of orogenic belts.

关 键 词：岩浆作用 壳幔演化 碰撞 动力学 

分 类 号：P547[天文地球—构造地质学]