Cratons are large, stable portions of the Earth's continental crust that have remained relatively unchanged for billions of years. They are typically found in the interiors of tectonic plates and consist of ancient rocks that have survived geological processes like erosion and tectonic activity. Cratons are divided into two main parts: the shield, which is exposed at the surface, and the platform, which is covered by younger sedimentary rocks. These geological formations are important for understanding the Earth's history and the processes that shaped its surface. Cratons often contain valuable mineral resources, such as gold, diamonds, and uranium, making them significant for mining industries. Their stability also provides insights into the early conditions of the Earth's crust.