venerdì 29 maggio 2009

The glacial circus

The glacer model many forms of erosion.The most siple are the glaial circus,semicircular depression with steep surface.
the circus re excavated for the hard pression of ice,combinated with the disgregation of rocks.
The ice captures materials that transpoted towards valley.The materials trasportated by the ice accumulate itat flank,a deep,and at frontage of the glacer and frmed the moraine.
The nouraine are heap of materials.the glacer deposes a lot of debris and they can also formed amphiteathres of moraine.

Migliaccio Federica

Nessun commento: