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ALPINE CONVENTION - Convenzione delle Alpi

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42<br />

General informations about the scope of application<br />

of the <strong>Alpi</strong>ne Convention<br />

Map 1: The Alps – Perimeter of the <strong>Alpi</strong>ne Convention<br />

The Alps are the highest mountain range in<br />

western Europe. They are made up of geologically<br />

young fold mountains which emerged as a<br />

result of the collision of the European and African<br />

continental plates. Until little less than 200<br />

million years ago southern Europe was covered<br />

by a primordial ocean (Tethys). Over millions of<br />

years, debris drifting in from the continent (Pangaea)<br />

and dead marine organisms were deposited<br />

on the seabed. Under the pressure of the<br />

mass of water this gradually solidified into<br />

stone.<br />

Roughly 130 million years ago the African and<br />

European continental plates collided with each<br />

other. The two plates acted like a vice; the released<br />

forces slowly lifted the layers deposited<br />

<strong>Alpi</strong>ne signals 1<br />

on the seabed from the primordial ocean and<br />

pushed them towards a vertical position. The<br />

rock layers were folded perpendicularly and<br />

partly stacked up on top of each other like blankets.<br />

Over time they rose higher and higher.<br />

Though the major deformation processes occurred<br />

millions of years ago, the compression<br />

process is still ongoing. Thus, the growth of the<br />

Alps is not complete yet. The longstanding<br />

mountain building phenomena are countered<br />

by continuous erosion processes. These move<br />

countless tons of material downhill and, along<br />

the rivers, far into the great plains. As the folding<br />

increased, these erosion phenomena intensified.

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