Baltic Shield
Quick Summary
The Baltic Shield, also known as the Fennoscandian Shield, is a large, stable area of the Earth's crust composed of ancient crystalline rocks, primarily from the Precambrian era, some dating back 2 to 3 billion years. This shield covers much of Finland and Sweden, along with eastern Norway. It is characterized by low relief, meaning it is generally flat and has been eroded over time.12
Continental shields are considered the foundational nuclei of continents, with younger rock formations often found bordering them. The Baltic Shield is a significant part of Europe's geological history, with its oldest rocks found in the north and progressively younger orogenic belts extending southward. These ancient rocks are a source of valuable minerals, including iron ore, copper, nickel, and tin.123
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