River Landforms – Youthful Stage (Leaving Cert Geography): Flashcards

Steep slopes, high velocity, vertical erosion

Upper course

Vertical erosion (cutting downwards)

V-shaped valleys and waterfalls

Rivers erode vertically into their bed

Water force that dislodges stones & sediment from riverbed

Stones scrape & grind against riverbed

Harder rock areas that jut into valley

Differential erosion where hard rock overlies soft rock

Deep hollow created by falling water at waterfall base

Left behind as waterfall retreats upstream

Hard resistant rock over softer rock

Waterfall retreating upstream

Deep hollows carved by swirling water in riverbed

Upper Shannon, Upper Blackwater, or Upper River Moy