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–Russia border flag operation as the pretext to provoke the Winter War a few days later. According to a Russian media report, Finland closed its border crossing with Russia, a counterpart to the Russian border post, on 4 December 2015, an hour and a half before the day's scheduled closing time and thus prevented fifteen people of Mid-East origin from crossing the border. According to the same source, some Finnish border officials confirmed that Raja-Jooseppi had closed early that day while a spokesman for the same department said the checkpoint closed at its regular time of 2100 hours. Note the time zone