Initial Stages:

* Exhumation: The erosion of overlying rock layers gradually exposes the root zone. This process, called exhumation, reveals the once-buried bedrock.

* Stress Release: As the weight of the mountain is reduced, the pressure on the roots diminishes. This can cause the rocks to expand and crack, leading to exfoliation (peeling) of the surface.

* Slope Instability: With the removal of supporting material, the exposed root zone becomes prone to instability. Landslides and rockfalls can occur, further modifying the landscape.

Long-Term Effects:

* Root Exposure and Weathering: The exposed root zone undergoes significant weathering, breaking down into smaller fragments and forming new landforms. This can create a series of ridges, valleys, and canyons.

* Formation of "Roots" of a Different Kind: Over time, the weathered bedrock can form a series of "roots" that are not the original igneous or metamorphic rock but rather a conglomerate of eroded fragments, cemented together by natural processes.

* Rejuvenation of the Landscape: The erosion and weathering of the roots can create new landscapes and expose underlying rock layers. This process can lead to the formation of new valleys, waterfalls, and other interesting geological features.

Example:

A classic example is the Sierra Nevada mountains in California. Erosion has exposed the granitic roots of these mountains, forming towering granite cliffs and vast granite domes, such as Half Dome and El Capitan.

In essence, the erosion of a mountain transforms its roots from buried foundations into a visible, weathered landscape, revealing the intricate history of geological forces and the enduring power of erosion.