The Western Canadian Sedimentary Basin (WCSB) is a large geological formation that spans parts of Alberta, British Columbia, Saskatchewan, and Manitoba. It is primarily composed of sedimentary rocks, which were formed over millions of years from ancient seas and river systems. The basin is rich in natural resources, including oil, natural gas, and coal, making it a significant area for energy production in Canada. The WCSB is characterized by various geological features, such as the Rocky Mountains to the west and the Canadian Shield to the east. Its formation began in the late Precambrian era and continued through the Paleozoic and Mesozoic eras. The basin plays a crucial role in Canada's economy, contributing to both local and national energy needs.