In the south section of the northwest of Altay, Xinjiang, the main structure directs NW-SE and suddenly transfers to S-N in the north (the primary S-N trench tectonics).

• 摘要新疆阿尔泰西北部地区的南段，主构造线方向为北西-南东向，而其北段的主构造线方向突变为近南-北向（区域性南北向构造）。