Mont Saint-Grégoire (; height: ) is a mountain in the

Montérégie Montérégie () is an administrative region in the southwest part of Quebec. It includes the cities of Boucherville, Brossard, Châteauguay, Longueuil, Saint-Hyacinthe, Saint-Jean-sur-Richelieu, Salaberry-de-Valleyfield and Vaudreuil-Dorion. ...

region of southern

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, Canada. It is composed of

essexite Essexite (), also called nepheline monzogabbro (), is a dark gray or black holocrystalline plutonic igneous rock. Its name is derived from the type locality in Essex County, Massachusetts, in the United States. Modern petrology identifies roc ...

and

syenite Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%). It is considered a sedimentary rock Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or de ...

s. The area around Mont Saint-Grégoire is known for its

maple syrup Maple syrup is a sweet syrup made from the sap of maple trees. In cold climates, these trees store starch in their trunks and roots before winter; the starch is then converted to sugar that rises in the sap in late winter and early spring. Ma ...

production, as well as some wine production. The name was changed in 1923 from Mount Johnson . Mont Saint-Grégoire was named in honour of

Pope Gregory I Pope Gregory I (; ; – 12 March 604), commonly known as Saint Gregory the Great (; ), was the 64th Bishop of Rome from 3 September 590 until his death on 12 March 604. He is known for instituting the first recorded large-scale mission from Ro ...

, who was also known as Gregory the Great.

Geology

It is thought that Mont Saint-Grégoire might be the deep extension of a vastly eroded ancient volcanic complex, which was probably active about 125 million years ago.A Hundred-Million Year History of the Corner Rise and New England Seamounts
Retrieved on 2007-08-01 The mountain was created when the North American Plate moved westward over the New England hotspot, along with the other mountains of the

Monteregian Hills The Monteregian Hills () is a linear chain of isolated mountains in Montreal and Montérégie, between the Laurentian Mountains and the Appalachians. Etymology The first definition of the Monteregian Hills came about in 1903 when Montreal geolo ...

. It forms part of the vast

Great Meteor hotspot track The New England hotspot, also referred to as the Great Meteor hotspot and sometimes the Monteregian hotspot, is a volcano, volcanic hotspot (geology), hotspot in the North Atlantic Ocean. It created the Monteregian Hills intrusions in Montreal a ...

References

Mont Saint Gregoire Mountains of Quebec under 1000 metres Igneous petrology of Quebec Stocks (geology) {{quebec-geo-stub