craton

[krey-ton]
noun Geology.
a relatively rigid and immobile region of continental portions of the earth's crust.
Also called continental shield.


Origin:
1940–45; < German Kraton, based on Greek krátos power; cf. -cracy, -on2

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Collins
World English Dictionary
craton (ˈkreɪtən)
 
n
geology See shield a stable part of the earth's continental crust or lithosphere that has not been deformed significantly for many millions, even hundreds of millions, of years
 
[C20: from Greek kratos strength]
 
cratonic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
craton   (krā'tŏn')  Pronunciation Key 
A large portion of a continental plate that has been relatively undisturbed since the Precambrian era and includes both shield and platform layers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for cratons
Cratons are subdivided geographically into geologic provinces.
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