中国西部燕山运动及岩浆作用与成矿

发布时间：2018-03-12 22:54

本文选题：燕山运动　切入点：岩浆作用　出处：《矿物岩石地球化学通报》2017年04期 　论文类型：期刊论文

【摘要】：本研究以中国西部(主要为扬子西缘及邻区)的燕山期岩浆岩和相关的金属矿床为重点研究对象,重点解决的关键科学问题为多幕次燕山期岩浆作用形成的深部动力学机制及其与金属成矿的关系,约束中国西部"燕山运动"前的构造背景,探讨特提斯洋的产生、俯冲和闭合过程及其与燕山期多幕式岩浆的时空演化关系,构建扬子地块西缘及邻区中生代洋陆演化格局,揭示中国西部多幕式"燕山运动"的基本特征、本质及其驱动机制,探讨中国西部"燕山运动"与中国东部燕山期重大地质事件之间的关联,为揭示"燕山运动"的驱动机制提供制约;同时,总结中国西部燕山期"安第斯型"金属成矿的动力学机制,为找寻中国的"安第斯型"金属成矿带提供重要启示。
[Abstract]:This study focuses on Yanshanian magmatic rocks and related metal deposits in western China (mainly in the western margin and adjacent areas of Yangtze). The key scientific problems to be solved are the deep dynamic mechanism of magmatism formed in the Yanshanian period and its relationship with metal mineralization, the tectonic background before the Yanshanian movement in western China, and the formation of the Tethys ocean. The process of subduction and closure and its relationship with the space-time evolution of Yanshanian multi-episode magma, the evolution pattern of Mesozoic oceanic land in the western margin of the Yangtze block and its adjacent areas are constructed, and the basic characteristics, essence and driving mechanism of the multi-act Yanshanian movement in western China are revealed. This paper discusses the relationship between the Yanshanian movement in western China and the important geological events of Yanshanian period in eastern China, which provides the restriction for revealing the driving mechanism of the Yanshanian movement, and at the same time, This paper summarizes the dynamic mechanism of the "Andes" metallogenesis in the Yanshanian period in western China, which provides important inspiration for finding the "Andean" metallogenic belt in China.
【作者单位】：中国科学院广州地球化学研究所同位素地球化学国家重点实验室;中国科学院青藏高原地球科学卓越创新中心;中国科学院大学;中国科学院地质与地球物理研究所;中国科学院广州地球化学研究所矿物学与成矿学重点实验室;地质过程与矿产资源国家重点实验室中国地质大学地球科学与资源学院;
【基金】：深地专项课题(2016YFC0600407) 国家基金项目(41630208)~~
【分类号】：P542;P618.2

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