The Laurentian Mountains in the Hautes-Gorges-de-la-Rivière-Malbaie National Park, Charlevoix, Quebec, Canada
|Peak||Mont Raoul Blanchard|
|Elevation||3,825 ft (1,166 m)|
The Laurentian Mountains (French: Laurentides) are a mountain range in southern Quebec, Canada, north of the St. Lawrence River and Ottawa River, rising to a highest point of 1,166 metres (3,825 ft) at Mont Raoul Blanchard, northeast of Quebec City in the Reserve Faunique des Laurentides. The Gatineau, L'Assomption, Lièvre, Montmorency, Nord and St. Maurice rivers rise in lakes in this mountain range.
Although Laurentides is one of Quebec's official regions, the mountain range of the same name runs through four other regions: Capitale-Nationale, Outaouais, Lanaudière, and Mauricie. Extending into central Ontario, the foothills of the Laurentian range are known as the Opeongo Hills, or the Madawaska Highlands.
The Laurentian Mountain range is one of the oldest mountain ranges in the world. It contains rocks deposited before the Cambrian Period 540 million years ago. The Laurentians are the central part of the Grenville orogeny dating back to 1000–1100 million years ago.
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