The uplifting, right-lateral strike-slip shearing, tilting and southward shearing of the Altai Mountains in Xinjiang have affected, since Oligocene, the drainage systems evolution and development.

• 摘要新疆北部阿尔泰山自渐新世以来，不断发生自北东向南西的掀斜隆升和右行走滑剪切作用，从而对额尔齐斯河、乌伦古河流域的环境，尤其是水系的演化产生重要影响。