UPTHRUST PARK IN SIMO

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ICE AGE
The glacier of the last ice age 15,000 years ago covered Scandinavia and part of Europe. The ice age was a result of the earth's climate change. The glacier covering Scandinavia was 1,000–3,700 metres thick. The mass of the glacier in Scandinavia pushed the continental plate on top of the molten core of the earth into a dent. In the park area the pressure of the ice against the crust of the earth was approx. 3000 tons per square kilometre. The depth of the dent caused by the glacier varied from tens to hundreds of metres. In the area of the park the dent was about 900–1000 metres deep.

The furnace-like heat at the earth's core keeps the magma in a molten state. The surface, however, is cool and has hardened into a continental plate, which consists mostly of light minerals. Thus the continental plate floats on top of molten magma. The thickness of the continental plate in Finland is about 60 km, and it is almost completely submerged in the magma. When 3 km of ice accumulated on top of the plate, it caused the plate to sink, creating a dent of about 1 km.


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