In Baie-Comeau, a cliff made of seashells stands in mid-forest!
An ancient sea
These shells were allegedly deposited when the St. Lawrence Estuary was occupied by a saltwater sea: the Goldthwait Sea.
This sea formed about 10 000 years ago, when the ice sheet covering North America melted, causing an influx of saltwater.
The ground, freed from the weight of the ice, gradually rose and the water level fell, leaving shells at high altitudes!
Under the ice
For millions of years, the climate has fluctuated between very cold glacial periods and warmer interglacial periods.
About 20 000 years ago, four glaciers covered North America. The biggest, the Laurentide Ice Sheet, spanned all of Canada.
In retreating, it changed the landscape, creating notches and bays, and leaving deposits in its wake.
The Garden of the Glaciers
The last Ice Age left numerous glacial vestiges in the landscape bordering the St. Lawrence River. Some spectacular examples can be discovered through a short visit to the Jardin des glaciers (Garden of the Glaciers), which also features a Seashell Valley that is the only one of its kind in the world!
The Multimedia experiences offered here tell visitors all about glaciers. Cool!