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Encyclopedia > Congo craton

The Congo craton, covered by the Palaeozoic-to-recent Congo basin, is an ancient Precambrian craton that with four others (the Kaapvaal, Zimbabwe, Tazania, and West African cratons) makes up the modern continent of Africa. These cratons were formed between about 3.6 and 2.0 billion years ago and have been tectonically stable since that time. All of these cratons are bounded by younger fold belts formed between 2.0 billion and 300 million years ago. The Palaeozoic is a major division of the geologic timescale, one of four geologic eras. ... The Precambrian or Cryptozoic is the period of the geologic timescale from the formation of Earth around 4500 million years before the present (BP) to the evolution of abundant macroscopic hard-shelled fossils, which marked the beginning of the Cambrian, some 542 million years BP. Remarkably little is known about... 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. ... Dymaxion map by Buckminster Fuller shows land mass with minimal distortion as only one continuous continent A continent (Latin continere, to hold together) is a large continuous land mass. ... Africa is the worlds second-largest continent in both area and population, after Asia. ...


The Congo craton occupies a large part of central southern Africa, extending from the Kasai region of the DRC into Sudan and Angola. It forms parts of the countries of Gabon, Cameroon, and the Central African Republic. A small portion extends into Zambia as well, where it is called the Bangweulu Block. The Bangweulu Block is a cratonic unit that forms part of the Congo craton of central Africa. ...


In Late Neoproterozoic time, the Congo craton was a low-lying platform the size of the conterminous United States. It was blanketed by carbonates and shales containing regionally mappable diamictite horizons of glacial origin. The Neoproterozoic is a period of time roughly from 1000 million years before the present to 544 million years before the present. ... Limey shale overlaid by limestone. ... Shale Shale is a fine-grained sedimentary rock whose original constituents were clays or muds. ... This article is about the geographical formation. ...


See also


  Results from FactBites:
 
BIGpedia - Congo - Encyclopedia and Dictionary Online (253 words)
The Republic of the Congo is often known as "Congo-Brazzaville".
The Democratic Republic of the Congo is sometimes known as "Congo-Kinshasa".
It was once a Belgian colony known as Congo Free State and Belgian Congo, depending on the period.
  More results at FactBites »

 
 

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