Berthier-sur-Mer is a charming town nestled in the Montmagny Regional County Municipality within the Chaudière-Appalaches region of Quebec, Canada. This picturesque town is situated on the south shore of the Saint Lawrence River, east of Quebec City on Route 132.
The town of Berthier-sur-Mer was named in honor of Alexandre Berthier, a captain in the Carignan-Salières Regiment. In 1672, Berthier was granted the title to this area, then known as the seigneury of Berthier-en-bas.
During the 19th century, Berthier-sur-Mer played a significant role in the history of Irish immigrants. Many were quarantined at nearby Grosse Isle, which is now recognized as a National Historic site.
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Berthier-sur-Mer is not just rich in history, but also in natural beauty. The town is home to a strip of fascinating underlying sedimentary bedrock that maintains a relatively straight shoreline. This shoreline features a natural harbour, quite round in shape, that has been eroded over time.
The bedrock is set at about a 60 to 80° angle and is composed of hundreds of very thin layers of red shale. These layers are interspersed every meter or so with 5 to 10 cm layers of what appears to be limestone. This geological feature is quite dramatic in places where it hasn't been worn down by human activities, adding to the unique charm of Berthier-sur-Mer, Quebec.
