How could this fact explain the presence of valles mariners on mars?

The presence of Valles Marineris on Mars can be explained by tectonic activity and the planet's geological history. The massive canyon system likely formed due to the stretching and cracking of the Martian crust as the planet cooled and contracted. Additionally, the absence of water erosion, which is prevalent on Earth, suggests that the canyon was primarily sculpted by tectonic forces rather than fluvial processes. This indicates a unique geological evolution on Mars, distinct from Earth.