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Cratons of South America and Africa during the Triassic Period when the two continents were joined as part of the Pangea supercontinent. A craton (/ ˈ k r eɪ t ɒ n / KRAYT-on, / ˈ k r æ t ɒ n / KRAT-on, or / ˈ k r eɪ t ən / KRAY-tən; [1] [2] [3] from Ancient Greek: κράτος kratos "strength") is an old and stable part of the continental lithosphere, which consists of Earth's two ...
A craton is an ancient part of the Earth's continental crust which has been more or less stable since Precambrian times. Cratons whose ancient rocks are widely exposed at the surface, often with relatively subdued relief, are known as shields.
Approximate location of Mesoproterozoic (older than 1.3 Ga) cratons within South America–Africa in their Gondwana configuration (c. 550-130 Ma).. The Congo Craton, covered by the Palaeozoic-to-recent Congo Basin, is an ancient Precambrian craton that with four others (the Kaapvaal, Zimbabwe, Tanzania, and West African cratons) makes up the modern continent of Africa.
The two Precambrian cratons examined in the study are the Congo and São Francisco cratons, which were stable Archaean blocks that were once part of a single landmass in central Africa and eastern ...
The Precambrian basement of Wyoming consists mainly of three major geologic terranes, the Archean Wyoming Craton or Province, the Paleoproterozoic Trans-Hudson orogen, and the Paleoproterozoic Colorado orogeny. The Colorado orogen collided with the Wyoming Craton at 1.78–1.75 Ga. Collision of the Colorado orogen and the Trans-Hudson orogen ...
Cratons themselves are tectonically inactive, but can occur near active margins, [2] with the WAC extending across 14 countries in Western Africa, coming together in the late Precambrian and early Palaeozoic eras to form the African continent.
The geology of Russia, the world's largest country, which extends over much of northern Eurasia, consists of several stable cratons and sedimentary platforms bounded by orogenic (mountain) belts. European Russia is on the East European craton, at the heart of which is a complex of igneous and metamorphic rocks dating back to the Precambrian.
The São Luís and Luis Alves cratonic fragments (Brazil) are shown, but the Arequipa–Antofalla Craton, the Sahara Craton, and some minor African cratons are not. Other versions describe the Guiana Shield separated from the Amazonian Shield by a depression. The Amazonian Craton is a geologic province located in South America.
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