扬子内陆地区晚燕山期岩浆作用与成矿作用研究进展  

Magmatic Process and Metallization of Yanshanian in Yangtze Area

作　　者：丁伟开 钟志菲 

机构地区：[1]东华理工大学地球科学学院,南昌30013

出　　处：《能源研究与管理》2015年第3期24-28,共5页Energy Research and Management

基　　金：东华理工大学研究生创新基金资助项目(DYCA13016);江西省杨就是创新基金资助项目(YC2013-S176)

摘　　要：扬子内陆地区是我国中生代岩浆活动频繁的地区,晚燕山构造亚阶段早期是其区内形成大量火山岩,由基性至酸性一系列岩石组合。扬子内陆地区的岩浆源区主要为亏损地幔端元DMM和富集地幔端元EMⅡ的混合,源区应具有富集岩石圈地幔的性质,扬子内陆地区中生代火山岩是中国东部火成岩省的重要组成部分,其形成受中国东部中生代燕山期的地球动力学背景制约,在晚中生代该地区可能经历了地壳加厚、拉张、下地壳拆沉、岩石圈减薄、软流圈上涌和壳幔相互作用的动力学演化过程。Yangtze inland areas of Mesozoic magmatism is an area of intense late Yanshan tectonic Asia early stages of its formation of large volcanic region by a series of mafic to acid rock mix. Magma source region of the Yangtze inland areas mainly depleted mantle end-member mixing DMM and enriched mantle end-member EM Ⅱ, the source should have the properties of enriched lithospheric mantle, Yangtze inland areas of the Mesozoic volcanic igneous province in eastern China an important part of which is formed by the Chinese Mesozoic Yanshan period of geodynamic constraints. The area has experienced in the Mesozoic tectonic transition region and major adjustment process, the region in the late Mesozoic crustal thickening may be experienced, tension, lower crustal delamination, lithospheric thinning, upwelling asthenosphere and crust-mantle interaction dynamics of evolution.

关 键 词：扬子内陆地区 岩石组合 岩浆来源 构造背景 成矿作用 

分 类 号：P611[天文地球—矿床学]