下扬子北缘滁州——巢湖前陆褶皱冲断带研究  

STUDY ON THE CHUZHOU CHAOHU FORELAND FOLD THRUST ZONE AT THE NORTHERN MARGIN OF THE LOWER YANGTZE LANDMASS

作　　者：涂荫玖[1] 刘湘培 汪祥云[3] 吴明安[4] 

机构地区：[1]安徽省地质矿产局312地质队,安徽蚌埠233040 [2]安徽地质矿产局,安徽合肥230001 [3]安徽省地质矿产局327地质队,安徽合肥230011 [4]安徽地质调查院,安徽合肥230001

出　　处：《大地构造与成矿学》2001年第1期9-26,共18页Geotectonica et Metallogenia

基　　金：原地质矿产部"安徽新类型;新地区;新矿种找矿研究"项目!(编号 :地科专 96 - 0 6 )的部分研究成果

摘　　要：滁州——巢湖前陆褶皱冲断带位于扬子地块北东缘 ,受区域内上太古界、上元古界、上古生界顶部的深、中、浅三个构造层次滑脱带控制而形成的多层次逆冲 -滑脱系统组成的薄皮式构造 ,构成它的基本构造格架。平面上具明显的分带性 ,自腹陆向前陆盆地依次分为后缘带、根带、中带、锋带 4部分 ,它们在构造样式、变形机制、与沉积盆地关系、岩浆活动、成矿作用方面都各具特征。由于中生代斜向碰撞作用 。The Chuzhou Chaohu foreland fold thrust zone lies at the northeastern margin of the Yangtze Landmass and its basic tectonic framework is composed of thin-skinned structure of multilayered thrust decollement system that is controlled and formed by the deep, middle and shallow seated structural decollement zones at the top of upper Archean, upper Proterozoic and upper Palaeozoic groups in the area, respectively. It shows evident zonation on plane and can be divided from the hinterland to foreland basin into four parts such as back fringe, root, core and front which have differences in structural pattern, deformational mechanism, relationship with depositional basin , magmatic activity and metallogenic process. Its apparent oblique compressional deformation is due to Mesozoic oblique collision.

关 键 词：扬子地块 前陆褶皱冲断带 平衡剖面 应变测量 斜向撞碰作用 构造应力场 形成机制 

分 类 号：P542[天文地球—构造地质学]