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craton |
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craton (krā`tŏn): see continent continent, largest unit of landmasses on the earth . The continents include Eurasia (conventionally regarded as two continents, Europe and Asia ), Africa , North America , South America , Australia , and Antarctica . ..... Click the link for more information. . craton [′krā‚tän] (geology) A large, stable portion of the continental crust. Cratons are the broad heartlands of continents with subdued topography, encompassing the largest areas of most continents. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Numerous questions remain, but these less familiar, non-uniformitarian processes explain in part why Archean cratons do not look like modern continental plates, even though many of the second-order processes were similar (e. Under cratons, however, such zones either did not exist or lay much deeper; the mantle directly under cratons was colder and had a high seismic velocity to depths greater than 200 km. Archean cratons are the primary host of economic diamond deposits worldwide and Superior, the world's largest craton, has demonstrated its potential for hosting economic diamond deposits through the development of De Beers Canada's Victor Project, where commercial diamond production is anticipated in 2008. |
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