柴达木盆地西部阿拉尔断裂新生代构造变形特征及意义

魏岩岩, 吴磊, 周道卿, 肖安成, 黄凯

Cenozoic tectonic deformation characteristics of Alar fault in southwestern Qaidam Basin and their significance

WEI Yan-Yan, WU Lei, ZHOU Dao-Qing, XIAO An-Cheng, HUANG Kai

图4 斜向断层引起的断层效应 a、b—当断裂走向与地层走向不一致时,断裂两侧的标志层或构造线投影到某一个面上时,会表现出水平错移,给人在平面上造成左旋走滑或右旋走滑假象;c—当断裂走向与地层走向一致时,将断点投影到同一平面上时未产生视觉误差

Fig.4 Fault effect caused by oblique fault a、b—if the fault strike is inconsistent with formation strike, then when the marker layers or structural lines on both sides of the fault are projected onto a certain surface, they will show horizontal shift, giving the illusion of left-lateral strike-slip or right-lateral strike-slip on the plane;c—if the fault strike is inconsistent with formation strike, then there is no visual error when the break point is projected onto the same plane