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Sight of the fjord Formation The Virtual Museum of Canada
Formation
Formation
Characteristics
Geographical map



Musée du Fjord

Elevation and erosion
Transverse section: 600 to 500 million years
Mountains rounded off by erosion

Graphic of the elevation and erosion

After the formation of the Grenville Mountains, all the continents were then a single vast continent. At the end of the Precambrian era (544 million years), this vast continent broke apart and the Canadian Shield was then surrounded by oceans. The earth’s crust in our region then underwent tremendous tectonic stresses. The current position of the black granite predominantly at the surface is due to all geological processes that raised these rocky masses and thereby produced erosion.

LEGEND
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Anorthosite (black granit)

 

Rocky basal complex

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