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Geological History

The Côte-Nord is characterized by a sinuous landscape marked by Precambrian outcrops and dotted with glacial moraines. Geologically speaking, this territory is part of the Laurentian Shield. More specifically, the Côte-Nord is composed of Precambrian rock, with the exception of the sedimentary limestone coast of Anticosti and Minganie.

More than a billion years ago, an immense mountain chain was formed when two continents collided. Worn by the action of ice over several thousand years, this chain, which can be observed in the region's North-East, dissimulates an astonishing fracture 60 km wide by 950 km long. Some of the oldest rocks on the planet can be found in this Labrador trench.

Physically, the Côte-Nord's shoreline is both a narrow coastal plain and a landscape of terraces, deltas, plateaus and rocky shores extending over more than 1,300 km. This rocky coast is rugged, particularly between Baie-Comeau and Pointe-des-Monts, where it turns into a vast terrace of fluvial material (sand and gravel) up to Havre-Saint-Pierre, where the shore, sprinkled with reefs, once again becomes rocky and very rugged.

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