Geology of Finland subsequent uplift and erosion would have eroded all of these sediments. In Finland, Caledonian nappes overlie shield rocks of Archean age. Despite occurring in about the same area the Scandinavian Caledonides and the modern Scandinavian Mountains are unrelated. The ice sheet that covered Finland intermittently during the Quaternary grew out from the Scandinavian Mountains. By some estimates the Quaternary glaciers eroded away on average 25 m of rock in Finland, with the degree of erosion being highly variable. Some of the material eroded in Finland has ended up in Germany, Poland, Russia and the Baltic states. Ground till left by
Finland–Sweden border 943/403), Pello (road 937/402) and in Aavasaksa/Övertorneå (road 98). There are also two river bridges in Tornio (one carries the European route E4, also Finnish national road 29), but they don't cross the border. The border is crossed by three roads in Haparanda/Tornio. South of the centre, the Torne River Railway Bridge crosses the river and the border. In Haparanda/Tornio, there is a bus station common to both cities, which was opened in 2014 and is located on the Swedish side near the border. Finland–Sweden border The Finnish-Swedish border is the border between the countries of Finland and Sweden. Almost