贵州纸房汞矿逆冲推覆构造研究

纸房汞矿的控矿断裂为一系列低角度逆冲断层。这些断裂在平面上呈有规律的带状分布,在剖面上构成一迭瓦状组合,断裂带总体的运动学特征为由南东向北西方向的逆冲。这些特征反映了该区地壳表层为一典型的逆冲推覆构造体系,它的形成是贵州东部江南古陆西沿大规模逆冲推覆和黔中地区侏罗山式褶皱形成和演化过程中统一应力场作用的产物。

A Study Of Thrust And Nappe Tectonics In Zhifang Mercury Mine, Guizhou Province

In Zhifang Mercury Mine the ore-controlling fractures are a series of trust faults with low angle which distribute regularily as bands on the surface and form imbrication in profile. The kinematical feature of faults as a whole is the thrusts running from southeast to northwest. These characteristics show that the shallow crust of this district is a typical trust and nappe tectonics system. Its formation resulted from the integrate action of the stress field in the process of growing and devloping of large scale of thrust and nappe techonics on the west margin of Jiangnan Oldland in east Guizhou and the Jura type fold in the middle of Guizhou. A possible model of thrust and nappe tectonics is suggested.