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Craton identification and geology

A stable, ancient portion of continental lithosphere that has remained relatively undeformed since the Precambrian, typically older than 1.5 billion years. Cratons form the nuclei of continents and consist of a crystalline basement shield where exposed at the surface and a platform where covered by younger, flat-lying sedimentary rocks . They are underlain by thick, cool, buoyant lithospheric roots that contribute to their long-term stability. Field: structural geology. Example: The Canadian Shield, the exposed portion of the North American craton, contains some of the oldest rocks on Earth 4.0 Ga Acasta Gneiss and hosts major nickel, copper, and gold deposits.. Related terms: Shield, Platform, Lithosphere, Precambrian.

Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner
GeoMiner
Last updated
2026-03-30T15:19:41.970235+00:00
Review status
Published; not independently peer-reviewed
  • USGS Thesaurus — U.S. Geological Survey. Controlled earth-science terminology used to describe USGS information resources.
  • Glossary of Geologic Terms — U.S. National Park Service. Geologic definitions prepared by the NPS Geologic Resources Inventory.

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Common questions

What does Craton mean in geology?
A stable, ancient portion of continental lithosphere that has remained relatively undeformed since the Precambrian, typically older than 1.5 billion years. Cratons form the nuclei of continents and consist of a crystalline basement shield where exposed at the surface and a platform where covered by younger, flat-lying sedimentary rocks . They are underlain by thick, cool, buoyant lithospheric roots that contribute to their long-term stability.
What is an example of Craton?
The Canadian Shield, the exposed portion of the North American craton, contains some of the oldest rocks on Earth 4.0 Ga Acasta Gneiss and hosts major nickel, copper, and gold deposits.
Which earth-science field uses the term Craton?
Craton is used in structural geology.
Which terms are related to Craton?
Related terms in this reference are Shield, Platform, Lithosphere, Precambrian.

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