The Laurentian Complex is a geological formation located in eastern Canada, primarily in the province of Quebec. It is part of the larger Canadian Shield, which is known for its ancient rock formations. The complex consists mainly of igneous and metamorphic rocks that date back to the Precambrian era, making it one of the oldest geological structures in North America. This region is significant for its rich mineral resources, including gold, copper, and nickel. The Laurentian Complex also plays a crucial role in understanding the geological history of the Earth, as it provides insights into the processes that shaped the planet's crust billions of years ago.