Building cratonic keels in Precambrian plate tectonics
Autor: | A L, Perchuk, T V, Gerya, V S, Zakharov, W L, Griffin |
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Rok vydání: | 2019 |
Zdroj: | Nature. 586(7829) |
ISSN: | 1476-4687 |
Popis: | The ancient cores of continents (cratons) are underlain by mantle keels-volumes of melt-depleted, mechanically resistant, buoyant and diamondiferous mantle up to 350 kilometres thick, which have remained isolated from the hotter and denser convecting mantle for more than two billion years. Mantle keels formed only in the Early Earth (approximately 1.5 to 3.5 billion years ago in the Precambrian eon); they have no modern analogues |
Databáze: | OpenAIRE |
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