A classification of landscape according to the processes that formed it. The footprints of wind, glaciers, climate changes and tectonic processes that shape the morphology through thousands to millions of years.

Glacial System

During the warmer days of Austral summer there are still areas high in the mountains where temperature never rises above zero degrees.

There, snow accumulates, and ice recrystallizes, turning into strong rock that flows downhill. Tons of ice drag rocks while fracturing, polishing, and pulverizing everything on its way, taking them where slope and velocity melt the ice and forces it to release its load.

Then, climate places the limit while ice delineates it, leaving a moraine, a belt of sediments, behind. Like a drawing on the landscape, it shows the extension of ice and the weather of the past.

The characteristic features of a glacial valley are the lake that remains from the ice melting, the moraine deposits, and the flat, fluvio-glacial plane, that extends beyond the moraines, where the drainage of glacial lakes feed rivers that re-shape the glacial sediments on their way towards the sea.

The boundaries of ice extension during different moments of history can be seen on the map, the oldest glaciations reached the Atlantic, a couple of million years ago, while the youngest ones did not reach far from the mountains. Glacial lakes are today our main source of fresh water.