山西中条群多期变形的厘定

COLLATION AND STIPULATION OF THE MULTIPLE DEFORMATIONS OF THE ZHONGTIAO GROUP,SHANXI

采用构造解析方法，研究中条山胡—篦铜矿区地质构造，鉴别中条群经历五期构造变形。即层内紧闭褶皱及近水平韧性剪切带、剥离断层（Ｄ１）、一系列大型同斜褶皱、翼部伴随断层（Ｄ２）、余家山剥离断层（Ｄ３）、主褶皱期——短轴褶皱（Ｄ４）和区域性伸展构造（Ｄ５）的叠加改造，地层的多次强烈构造置换。重新建立了篦子沟组的层序。

Based on tectonic analysis of the Hu-Bi copper mine in Zhongtiaoshan,five episodes of structural deformations can be distinguished in the Zhongtiao group, i.e. bedding appressed folds,subhorizontal ductile shear zones and denudational faults (D 1),a series of giant isoclined folds,accompanying faults in limbs(D 2),Yujiashan denudational faults (D 3),the main folding epoch,being a short axis fold (D 4) and superimposed reformation of the regional extensional structure (D 5).The Zhongtiao group has strongly transposited by multiple foliation.The stratigraphic sequence of Bizigou formation has been reconstructed in this paper.