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Oceanic crust Geologic province ]] A shield is a large area of exposed Basement Rock s of Continental Crust , part of Craton . Shields are typically composed of Precambrian Metamorphic and Igneous rocks. Shields are part of Tectonically stable areas called cratons. Shields are usually surrounded by Platforms . Shields often - but not always - lie in the interior of a Continent , such as the Canadian Shield , Baltic Shield , and the Arabian-Nubian Shield . Shields are generally stable, with few Earthquakes or Volcanoes . Shields have no active Orogenic Belt s. The term, in this sense, was translated from German ''schild'' by H. B. C. Sollas in '' Suess's Face of Earth'' in 1901 . See also |