Caledonian orogeny facts for kids
The Caledonian orogeny was a mountain building era which left its mark in the northern parts of the British Isles, the Scandinavian Mountains, Svalbard, eastern Greenland and parts of north-central Europe.
The events occurred from the Ordovician to early Devonian, roughly 490–390 million years ago (mya). It was caused by the closure of the Iapetus Ocean when the continents and lands of Laurentia, Baltica and Avalonia collided.
Part of the mountain chain ended up in modern North America, where it is called the Acadian orogeny.
The Caledonian orogeny was one of several orogenies that would eventually form the supercontinent Pangaea later in the Palaeozoic era. The main phase of the Caledonian orogeny happened from about 425 to 395 million years ago.
Caledonian orogeny Facts for Kids. Kiddle Encyclopedia.