What is the role of erosion in the Grand Canyon's formation?

Erosion plays a critical role in the formation of the Grand Canyon, primarily through the action of the Colorado River. Over millions of years, the river has continuously cut through the rock layers, deepening and widening the canyon. This process involves both mechanical and chemical erosion, where the force of moving water removes sediment and wears down rock formations. The river not only carves the canyon's shape but also transports the eroded materials downstream, allowing for the development of its distinctive features. This dynamic interaction between water flow and geological structures underpins the Grand Canyon's vast size and layered appearance, showcasing the powerful influence of erosion in shaping landforms.