Laurentian Mountains
The Laurentian Mountains (French: Laurentides) are a mountain range in southern Quebec, Canada.
The highest elevation in the range is Mont Raoul Blanchard, north east of Quebec City, at height of of 1166 metres (3,825 feet)
The Adirondack Mountains in New York State are an extension of the Laurentians, although they are sometimes mistakenly included with the Appalachian Mountains.
The foothills of the Laurentian range extend into northeastern Ontario, where they are known referred to as the Laurentian Highlands, Madawaska Highlands, and the Opeongo Hills.
Age
The Laurentian Mountain range is one of the oldest mountain ranges in the world. It contains rocks deposited during Cambrian time, 540 million years ago. [1]. Laurentian are the central part of the Grenville orogeny 1100-1000 mya (million years) ago.