Major Physical Features of Quebec Beyond the St. Lawrence River

Quebec's vast territory (1.5 million km²) encompasses diverse physiographic regions beyond the St. Lawrence Valley:

Mountain Systems

• Laurentian Mountains (Laurentides): Ancient Precambrian shield mountains covering central/northern Quebec; rounded peaks, countless lakes, boreal forest. Popular for recreation (Mont-Tremblant, Laurentides Wildlife Reserve).
• Appalachian Mountains: Extend into southeastern Quebec (Eastern Townships, Gaspésie). Mount Jacques-Cartier (1,270 m) is the highest peak in southern Quebec. The Chic-Choc Mountains in Gaspésie host caribou and alpine tundra.

Peninsulas and Coastlines

• Gaspé Peninsula: Dramatic coastline, Percé Rock, Forillon National Park, rich maritime history.
• Ungava Peninsula: Subarctic tundra, Inuit communities, major rivers (Koksoak, George) flowing into Ungava Bay.

Hydrography

• James Bay & Hudson Bay: Inland seas bordering western/northern Quebec; vast wetlands (James Bay Lowlands) critical for migratory birds and Cree communities.
• Major Rivers: Ottawa, Saguenay, Manicouagan, Rupert, Eastmain, La Grande (hydroelectric development).
• Lakes: Lake Mistassini (largest natural), Manicouagan Reservoir (annular, impact crater), thousands of shield lakes.

Geological Highlights

Manicouagan Crater (215 Myr), one of Earth's largest visible impact structures; the Labrador Trough iron ore belt; extensive mineral resources (gold, copper, nickel, lithium) in the Abitibi and Ungava regions.