Geological history of Europe
The formation of Europe as a coherent landmass dates to after the breakup of Pangaea, taking place during the Oligocene and completed by the early Neogene period, some 20 million years ago. == Pre-Pleistocene == During the Lower Paleozoic Era, Proto-Europe acquired a large piece of crust, known as East Avalonia, that would eventually become northwestern Scotland.
Source: Wikipedia — Geological history of Europe (CC BY-SA 4.0)