bn:03707920n
Noun Concept
Categories: All articles needing additional references, Cratons, Plate tectonics
EN
shield  Archaean Shield  Archean Shield  continental shield  Geological shield
EN
A shield is a large area of exposed Precambrian crystalline igneous and high-grade metamorphic rocks that form tectonically stable areas. Wikipedia
English:
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EN
A shield is a large area of exposed Precambrian crystalline igneous and high-grade metamorphic rocks that form tectonically stable areas. Wikipedia
A large area of exposed rocks that is tectonically stable Wikipedia Disambiguation
A large expanse of exposed stable Precambrian rock. Wiktionary