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
Russia–Sweden relations 1710; the territory was later ceded to Russia in 1721. All Estonian-Swedes from the island of Hiiumaa were forced to move to New Russia (present day Ukraine) by Catherine II of Russia, where they formed their very own village Gammalsvenskby. In the middle of the Napoleonic wars, 1803-1815, Tsar Alexander of Russia started a war against Sweden. The area included modern Sweden and Finland. Sweden relied on what it called ‘The Gibraltar of the North'--the new fortifications at Sveaborg near modern-day Helsinki. It was prepared for heavy attacks and long sieges. Nevertheless, it surrendered to the Russians in a matter