the glacier basei viewed from the north, almost completely devoid of snow
TRANSCRIPT
The glacier Basei viewed from the north, almost completely devoid of snow
We live in a hot natural phase, but in particular the human activities have helped to increase this
phenomenon.
The rate of melting of glaciers has tripled since 1970.
In 2030, the glaciers could be just a memory
THE LAKE BORN BETWEEN THE CLOUDS
Ghiaccio del Rocciamelone
First phase of development in the 1980
The situation in September 2000
Measurement of the depth of the lake using a sonar
The glacial erosion
Strong pressure exercised by the glacier moving and by the friction
enhanced by the presence of debris.
Ample funds and often stepped, flanked by steep scarps
U valleys
The lower Susa’s valley
Moraine accumulation Jumble of boulder scattered in a matrix of sand and silt
Lateral moraine
The lateral moraine that blocks the pond indicates the greater level reached by the glacier
Glacier of the Mare (Ortles-Cevedale)
The amphitheatre of the Lake of Miage (Monte Bianco) is composed of twenty concentric moraines (pile of rock debris)
(Valley of Funes – Alto Adige)Glacial strip
Sheepbacks (or back of whale)
Striped rocks
The sheepbacks are generally rounded on the top and in the side, oriented according to the
direction of glacier
The big rocks
Erratic rocksThe erratic rocks can be transported over long distances
by glaciers
Caselette
The big rock in the entrance of the village
Pianezza
Il “Roc”
Villarbasse
Condove
The rock of Castellazzo
The block rocky region Castellazzo is a typical example of a boulder, fell for landslide on the
surface of a glacier and transported in the valley
THE VALLEYS SUSPENDED
The longitudinal profile of a glacial valley
Germanasca’s Valley – Torino – I tredici laghi
threshold
navel
Rock glaciers
characteristic accumulations of large blocks with their lobed
shape
