Baltic Shield

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A region underlain by Precambrian rocks that covers the Kola Peninsula in western Russia, Finland, Sweden, and Norway. The region extends from the Arctic Ocean to the island of Bornholm, in the Baltic Sea off the southern tip of Sweden, and from the eastern coast of the Kola Peninsula to the westernmost tip of Norway. This continental mass once formed the south-eastern margin of the Iapetus Ocean. The subduction of this ocean during the Silurian and early Devonian brought the Baltic Shield into contact with North America and Greenland. It separated again with the opening of the Atlantic Ocean.

Baltic Shield

Subjects: Ecology and Conservation.

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