Or shield; Core of a continent, a vast tract of highly deformed metamorphic rock around which the continent has been built. Intense mountain-building periods shook these shield areas in Precambrian times before stable conditions set in.
Cratons exist in the hearts of all the continents, a typical example being the Canadian Shield.
Geology, large, relatively stable section of earth's crust, forming the basis of a continent or ocean.
Starinsko odbrambeno oružje, odbrambneo oruđe viteza.