Urwisko (geomorfologia)
Urwisko w Nowej Zelandii
Urwisko – bardzo stromy, pionowy lub przewieszony teren. Urwisko może być zbudowane ze skał litych, gliny, rzadziej piasku. Wspinacze nazywają tak fragment ściany w górach czy skałkach.
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Omarama Clay Cliffs.jpg
Autor: Bernard Spragg. NZ, Licencja: CC0
The Clay Cliffs are huge sharp pinnacles and ridges with deep, narrow ravines separating them. The Clay Cliffs are made of layers of gravel and silt, deposited by rivers flowing from glaciers existing 1-2 million years ago. Compared to the nearby mountains, which are 250 million years old, the Clay Cliffs are relatively new. Today the gravel and silt layers can be seen as sloping bands as the strata have been tilted since their deposition 1-2 million years ago.
Autor: Bernard Spragg. NZ, Licencja: CC0
The Clay Cliffs are huge sharp pinnacles and ridges with deep, narrow ravines separating them. The Clay Cliffs are made of layers of gravel and silt, deposited by rivers flowing from glaciers existing 1-2 million years ago. Compared to the nearby mountains, which are 250 million years old, the Clay Cliffs are relatively new. Today the gravel and silt layers can be seen as sloping bands as the strata have been tilted since their deposition 1-2 million years ago.