Unlike the Grand Canyon, it wasn't carved by water; it may have formed when the Tharsis bulge rose up, creating the valley as a radial crack in the surface.

与大峡谷不同，它不是由水流蚀刻而成的；水手谷可能是在塔尔西斯隆起升起时，在火星表面形成的径向裂痕。