Between Tadoussac and Baie-Sainte-Catherine, are the cliffs of the fjord.
Once upon a time, there was a fjord
When we watch the water of the Saguenay River flowing between the fjord’s steep cliffs, it’s hard to imagine that there was once a glacier here. Yet, this valley was covered in ice during the last glaciation.
Some 10 000 years ago, the climate warmed up and sea water levels rose. These waters filled the glacially carved valley up to about 100 kilometers inland, forming the Saguenay Fjord as we know it today.
Where two waters meet
In the Saguenay Fjord, water circulation obeys to specific, spectacular physical laws.
Fed by freshwater rivers, the first layer (10- 15 m) is slightly salted and found on the surface. It circulates over a layer of briny water from the St. Lawrence estuary, much colder and saltier, which feeds the fjord down to more than 200 meters in depth!