Rock Types Found in Quebec, Canada

Geological Provinces & Typical Rocks

1. Grenville Province: Precambrian metamorphic—gneiss, quartzite, marble; highly deformed, multiple metamorphic events.
2. St. Lawrence Platform: Paleozoic sedimentary—limestone, sandstone, shale; ancient marine deposits.
3. Appalachian Mountains: Paleozoic‑Mesozoic sedimentary—limestone, sandstone, siltstone, conglomerate; orogenic belts.
4. Canadian Shield: Precambrian igneous/metamorphic—granite, diorite, gneiss, metamorphosed volcanics/sediments.
5. James Bay Lowlands: Paleozoic‑Mesozoic sedimentary—limestone, dolomite, sandstone, shale; shallow sea/coastal.
6. Hudson Bay Region: Precambrian igneous/metamorphic—granite, diorite, gneiss (similar to Shield).