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赣东北是我国铜矿的主要蕴藏区之一,此外还分布有铅锌钨锡铌钽等金属矿产.该区主要由东西向、北东向、北北东向及北西向构造组成区域构造的格架(图1).东西向构造是区内发育最早、活动时间最长的构造,自晋宁期到喜山期均有活动,波及之地层从古生界以前直至新生界.组成这个构造的主要成分为一系列东西向基底褶皱带及伴生的东西向断裂.由于受后期构造的干扰和改造,使局部方向变为北东东、东西向构造,对以后各期构造运动的发生、发展有明显的影响.北东向构造始于上古生代,系叠加在东西构造的基础上发生,主要由一系列北东向褶皱带、压扭性断裂和岩带组成,燕山期具有明显的继承性和新生性.北北东向构造发生于燕山早期,至新生代仍有活动,整个构造运动分为早、晚两个阶段:第一阶段主要形成北东20～30°的平行相间展布的断隆和断凹;第二阶段形成一
Jiangxi and Northeast China is one of the main deposits of copper deposits in China, in addition to metal minerals such as lead, zinc, tungsten, tin, niobium and tantalum, etc. The area is mainly composed of east-west, northeast, north-north east and northwest (Figure 1) .East and west tectonics are the earliest and most active tectonic structures in the region, with activities ranging from the Jinning Period to the Himalayan Period, with strata stratiforming from the Paleozoic before the Cenozoic. Is mainly composed of a series of east-west basal fold belt and associated east-west fault.Because of the disturbance and transformation of the later tectonics, the local direction is changed into the NE, EW and Tectonics, and the occurrence and development of the tectonic movement in later stages Has a significant impact on the North East structure began in the Paleozoic, the Department of superposition on the basis of the East-West structure, mainly by a series of North Eastern fold belt, compressive-shear fracture and rock band, Yanshan period has obvious succession And the neogenic .North-Eastward structure occurred in the early Yanshanian to the Cenozoic activity still, the whole tectonic movement is divided into two stages: the first stage of the formation of the North East 20 ~ 30 ° parallel phase distribution Broken off and broken concave; second order Forming a