Concept information
Preferred term
craton
Type
-
http://www.irandoc.ac.ir/onto/irandoc-meta/Concept
Broader concept
Entry terms
Definitions
- A craton is an old and stable part of the continental crust that has survived the merging and splitting of continents and supercontinents for at least 500 million years. Some are over two billion years old. Cratons are generally found in the interiors of continents and are characteristically composed of ancient crystalline basement crust of lightweight felsic igneous rock such as granite. They have a thick crust and deep roots that extend into the mantle beneath to depths of 200 km. [Wikipedia]
Obsolete
- false
In other languages
-
-
Persian
-
پوسته پایا
URI
http://www.irandoc.acir/onto/irandoc/SWEETT07782
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