peneplanation उदाहरण वाक्य

The early stage is characterized by narrow, V-shaped and steeply-sloping valleys at high elevation and relief with vertical erosion exceeding lateral erosion, the middle stage with U-shaped valleys with narrow floodplain where lateral erosion exceeding vertical erosion, and the late stage by broad U-shaped valleys with wide floodplains, extreme lateral erosion and peneplanation.