华南山字型构造体系的厘定及意义  

THE EPSILON TYPE STRUCTURAL SYSTEM OF SOUTH CHINA

作　　者：赵剑畏 王治顺[2] 朱大岗[2] 

机构地区：[1]江苏省地矿局地质研究所 [2]中国地质科学院地质力学研究所

出　　处：《地质力学学报》1997年第1期1-9,共9页Journal of Geomechanics

基　　金：地矿部"八五"重大基础项目

摘　　要：华南山字型的前弧展布于中国大陆南缘和越南北部，南抵西沙纬向带北侧。西翼反射弧出现于念青唐古拉—伯舒拉岭及其南侧，东翼反射弧位于南黄海地区，沿弧形带以中、新生代岩浆岩和构造动力变质带的弧形展布为显著特色。它的脊柱在川、黔、滇、桂毗邻地区，以近ＳＮ向褶皱带为主体。华南山字型是印支期发生发展，燕山期成型和定型，喜马拉雅期仍有较强活动的构造体系。该体系的确定，对研究华南地质构造格架与矿产资源的形成和分布规律具有重要意义。实际上。The frontal arc of the epsilon type structural system of South China is distributed on the continental margin of South China and Northern Vietnam,the apex of which reaching as far southwards as the northern side of the Xisha Islands latitudinal structural system.The west reflex arc appears at the Nianqingtanggula Boshula mountains and its southern side,whereas the east reflex arc is located in the southern Yellow Sea.There are Mesozoic Cenozoic magmatites and dynamometamorphic rocks along the arcuate belt.The backbone is mainly represented by the N S extending fold belt starting from Sichuan,Guizhou,Yunnan,to Guangxi province.The structural system began to develop during the Indo sinian orogeny,took full shape in the Yanshanian movement,and had a strong activity in the Himalayan epoch.Its determination is conducive to the knowledge of tectonic framework of South China,and its relation to the distribution of mineral resources.It also provides the fresh evidence for the way in which East Asia continent moved.In face,it is the tie between the Tethys tectonic domain and the Pacific tectonic domain.

关 键 词：华南地区 地质构造 山字型构造体系 厘定 

分 类 号：P552[天文地球—构造地质学]